511020542042 has 8 divisors (see below), whose sum is σ = 766548897300. Its totient is φ = 255504242944.

The previous prime is 511020541991. The next prime is 511020542089. The reversal of 511020542042 is 240245020115.

It can be written as a sum of positive squares in 2 ways, for example, as 476084820121 + 34935721921 = 689989^2 + 186911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×511020542042² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2907317 + ... + 3078072.

Almost surely, 2^511020542042 is an apocalyptic number.

511020542042 is a deficient number, since it is larger than the sum of its proper divisors (255528355258).

511020542042 is a wasteful number, since it uses less digits than its factorization.

511020542042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6028080.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 511020542042 its reverse (240245020115), we get a palindrome (751265562157).

The spelling of 511020542042 in words is "five hundred eleven billion, twenty million, five hundred forty-two thousand, forty-two".