1521242032142 has 24 divisors (see below), whose sum is σ = 2745943574760. Its totient is φ = 629479460400.

The previous prime is 1521242032133. The next prime is 1521242032187. The reversal of 1521242032142 is 2412302421251.

It is a super-2 number, since 2×1521242032142² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267632984 + ... + 267638667.

It is an arithmetic number, because the mean of its divisors is an integer number (114414315615).

Almost surely, 2^{1521242032142} is an apocalyptic number.

1521242032142 is a deficient number, since it is larger than the sum of its proper divisors (1224701542618).

1521242032142 is a wasteful number, since it uses less digits than its factorization.

1521242032142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535271696 (or 535271689 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1521242032142 its reverse (2412302421251), we get a palindrome (3933544453393).

The spelling of 1521242032142 in words is "one trillion, five hundred twenty-one billion, two hundred forty-two million, thirty-two thousand, one hundred forty-two".