42351431512 has 64 divisors (see below), whose sum is σ = 86515521120. Its totient is φ = 19319205888.

The previous prime is 42351431503. The next prime is 42351431519. The reversal of 42351431512 is 21513415324.

It is a super-2 number, since 2×42351431512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42351431519) 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, 8844783 + ... + 8849569.

Almost surely, 2^42351431512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42351431512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43257760560).

42351431512 is an abundant number, since it is smaller than the sum of its proper divisors (44164089608).

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

42351431512 is a wasteful number, since it uses less digits than its factorization.

42351431512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780 (or 5776 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

Adding to 42351431512 its reverse (21513415324), we get a palindrome (63864846836).

The spelling of 42351431512 in words is "forty-two billion, three hundred fifty-one million, four hundred thirty-one thousand, five hundred twelve".