1520323142 has 48 divisors (see below), whose sum is σ = 2576429856. Its totient is φ = 668707200.

The previous prime is 1520323117. The next prime is 1520323177. The reversal of 1520323142 is 2413230251.

It is a super-2 number, since 2×1520323142² = 4622764912201504328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1773578 + ... + 1774434.

It is an arithmetic number, because the mean of its divisors is an integer number (53675622).

Almost surely, 2^1520323142 is an apocalyptic number.

1520323142 is a deficient number, since it is larger than the sum of its proper divisors (1056106714).

1520323142 is a wasteful number, since it uses less digits than its factorization.

1520323142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1520323142 is about 38991.3213677095. The cubic root of 1520323142 is about 1149.8608885289.

Adding to 1520323142 its reverse (2413230251), we get a palindrome (3933553393).

The spelling of 1520323142 in words is "one billion, five hundred twenty million, three hundred twenty-three thousand, one hundred forty-two".