51040430142 has 32 divisors (see below), whose sum is σ = 109951823520. Its totient is φ = 15702092160.

The previous prime is 51040430081. The next prime is 51040430149. The reversal of 51040430142 is 24103404015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51040430149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436792 + ... + 541172.

It is an arithmetic number, because the mean of its divisors is an integer number (3435994485).

Almost surely, 2^51040430142 is an apocalyptic number.

51040430142 is an abundant number, since it is smaller than the sum of its proper divisors (58911393378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51040430142 is a wasteful number, since it uses less digits than its factorization.

51040430142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110668.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 51040430142 its reverse (24103404015), we get a palindrome (75143834157).

The spelling of 51040430142 in words is "fifty-one billion, forty million, four hundred thirty thousand, one hundred forty-two".