511008742 has 4 divisors (see below), whose sum is σ = 766513116. Its totient is φ = 255504370.

The previous prime is 511008721. The next prime is 511008791. The reversal of 511008742 is 247800115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247800115 = 5 ⋅49560023.

It is a super-2 number, since 2×511008742² = 522259868800845128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511008742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127752184 + ... + 127752187.

It is an arithmetic number, because the mean of its divisors is an integer number (191628279).

Almost surely, 2^511008742 is an apocalyptic number.

511008742 is a deficient number, since it is larger than the sum of its proper divisors (255504374).

511008742 is a wasteful number, since it uses less digits than its factorization.

511008742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255504373.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 511008742 is about 22605.5024717435. The cubic root of 511008742 is about 799.4833862513.

Adding to 511008742 its reverse (247800115), we get a palindrome (758808857).

The spelling of 511008742 in words is "five hundred eleven million, eight thousand, seven hundred forty-two".