140521416 has 144 divisors (see below), whose sum is σ = 432602640. Its totient is φ = 37920960.

The previous prime is 140521411. The next prime is 140521417. The reversal of 140521416 is 614125041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (140521411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 424371 + ... + 424701.

It is an arithmetic number, because the mean of its divisors is an integer number (3004185).

Almost surely, 2^140521416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140521416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216301320).

140521416 is an abundant number, since it is smaller than the sum of its proper divisors (292081224).

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

140521416 is a wasteful number, since it uses less digits than its factorization.

140521416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 362 counting only the distinct ones).

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

The square root of 140521416 is about 11854.1729361436. The cubic root of 140521416 is about 519.8932423836.

Adding to 140521416 its reverse (614125041), we get a palindrome (754646457).

The spelling of 140521416 in words is "one hundred forty million, five hundred twenty-one thousand, four hundred sixteen".