712840535442 has 144 divisors (see below), whose sum is σ = 1923018020352. Its totient is φ = 186724776960.

The previous prime is 712840535369. The next prime is 712840535471. The reversal of 712840535442 is 244535048217.

712840535442 is a `hidden beast` number, since 7 + 12 + 8 + 40 + 53 + 544 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1157298 + ... + 1662834.

It is an arithmetic number, because the mean of its divisors is an integer number (13354291808).

Almost surely, 2^712840535442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 712840535442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961509010176).

712840535442 is an abundant number, since it is smaller than the sum of its proper divisors (1210177484910).

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

712840535442 is a wasteful number, since it uses less digits than its factorization.

712840535442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505621 (or 505599 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 712840535442 in words is "seven hundred twelve billion, eight hundred forty million, five hundred thirty-five thousand, four hundred forty-two".