642007071412 has 24 divisors (see below), whose sum is σ = 1290466486400. Its totient is φ = 273763242720.

The previous prime is 642007071401. The next prime is 642007071451. The reversal of 642007071412 is 214170700246.

It is a happy number.

It is a congruent number.

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, 57604539 + ... + 57615682.

Almost surely, 2^642007071412 is an apocalyptic number.

It is an amenable number.

642007071412 is an abundant number, since it is smaller than the sum of its proper divisors (648459414988).

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

642007071412 is a wasteful number, since it uses less digits than its factorization.

642007071412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115220431 (or 115220429 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

Adding to 642007071412 its reverse (214170700246), we get a palindrome (856177771658).

The spelling of 642007071412 in words is "six hundred forty-two billion, seven million, seventy-one thousand, four hundred twelve".