142521510312 has 32 divisors (see below), whose sum is σ = 395893084800. Its totient is φ = 47507170032.

The previous prime is 142521510293. The next prime is 142521510317. The reversal of 142521510312 is 213015125241.

It is a happy number.

142521510312 is a `hidden beast` number, since 1 + 425 + 215 + 10 + 3 + 12 = 666.

It is a super-2 number, since 2×142521510312² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (142521510317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329910688 + ... + 329911119.

It is an arithmetic number, because the mean of its divisors is an integer number (12371658900).

Almost surely, 2^142521510312 is an apocalyptic number.

142521510312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142521510312 is an abundant number, since it is smaller than the sum of its proper divisors (253371574488).

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

142521510312 is a wasteful number, since it uses less digits than its factorization.

142521510312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659821822 (or 659821812 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 142521510312 its reverse (213015125241), we get a palindrome (355536635553).

The spelling of 142521510312 in words is "one hundred forty-two billion, five hundred twenty-one million, five hundred ten thousand, three hundred twelve".