141521604 has 72 divisors (see below), whose sum is σ = 388096128. Its totient is φ = 40017600.

The previous prime is 141521593. The next prime is 141521609. The reversal of 141521604 is 406125141.

141521604 = 332² + 333² + ... + 772².

It is a happy number.

141521604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×141521604³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (141521609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58197 + ... + 60579.

It is an arithmetic number, because the mean of its divisors is an integer number (5390224).

Almost surely, 2^141521604 is an apocalyptic number.

141521604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 141521604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194048064).

141521604 is an abundant number, since it is smaller than the sum of its proper divisors (246574524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

141521604 is a wasteful number, since it uses less digits than its factorization.

141521604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 141521604 is about 11896.2853025640. The cubic root of 141521604 is about 521.1238071872.

Adding to 141521604 its reverse (406125141), we get a palindrome (547646745).

The spelling of 141521604 in words is "one hundred forty-one million, five hundred twenty-one thousand, six hundred four".