512397442 has 16 divisors (see below), whose sum is σ = 821870712. Its totient is φ = 238739200.

The previous prime is 512397421. The next prime is 512397449. The reversal of 512397442 is 244793215.

It can be written as a sum of positive squares in 4 ways, for example, as 510262921 + 2134521 = 22589^2 + 1461^2 .

It is a super-2 number, since 2×512397442² = 525102277136286728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (512397449) 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 7 ways as a sum of consecutive naturals, for example, 71173 + ... + 78040.

Almost surely, 2^512397442 is an apocalyptic number.

512397442 is a deficient number, since it is larger than the sum of its proper divisors (309473270).

512397442 is a wasteful number, since it uses less digits than its factorization.

512397442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149333.

The product of its digits is 60480, while the sum is 37.

The square root of 512397442 is about 22636.1976047215. The cubic root of 512397442 is about 800.2069475030.

The spelling of 512397442 in words is "five hundred twelve million, three hundred ninety-seven thousand, four hundred forty-two".