142930440 has 128 divisors (see below), whose sum is σ = 482112000. Its totient is φ = 37661184.

The previous prime is 142930439. The next prime is 142930477. The reversal of 142930440 is 44039241.

142930440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142930440² = 40858221357187200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95377 + ... + 96863.

It is an arithmetic number, because the mean of its divisors is an integer number (3766500).

Almost surely, 2^142930440 is an apocalyptic number.

142930440 is a gapful number since it is divisible by the number (10) 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 142930440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241056000).

142930440 is an abundant number, since it is smaller than the sum of its proper divisors (339181560).

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

142930440 is a wasteful number, since it uses less digits than its factorization.

142930440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 142930440 is about 11955.3519396127. The cubic root of 142930440 is about 522.8473488395.

Adding to 142930440 its reverse (44039241), we get a palindrome (186969681).

The spelling of 142930440 in words is "one hundred forty-two million, nine hundred thirty thousand, four hundred forty".