513405442 has 16 divisors (see below), whose sum is σ = 841021632. Its totient is φ = 233115120.

The previous prime is 513405439. The next prime is 513405467. The reversal of 513405442 is 244504315.

It is a self number, because there is not a number n which added to its sum of digits gives 513405442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9208 + ... + 33340.

It is an arithmetic number, because the mean of its divisors is an integer number (52563852).

Almost surely, 2^513405442 is an apocalyptic number.

513405442 is a deficient number, since it is larger than the sum of its proper divisors (327616190).

513405442 is a wasteful number, since it uses less digits than its factorization.

513405442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25113.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 513405442 is about 22658.4518888648. The cubic root of 513405442 is about 800.7313322793.

Adding to 513405442 its reverse (244504315), we get a palindrome (757909757).

The spelling of 513405442 in words is "five hundred thirteen million, four hundred five thousand, four hundred forty-two".