140436522642 has 16 divisors (see below), whose sum is σ = 302478664320. Its totient is φ = 43211237712.

The previous prime is 140436522557. The next prime is 140436522643. The reversal of 140436522642 is 246225634041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 140436522642.

It is not an unprimeable number, because it can be changed into a prime (140436522643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900234042 + ... + 900234197.

It is an arithmetic number, because the mean of its divisors is an integer number (18904916520).

Almost surely, 2^140436522642 is an apocalyptic number.

140436522642 is an abundant number, since it is smaller than the sum of its proper divisors (162042141678).

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

140436522642 is a wasteful number, since it uses less digits than its factorization.

140436522642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800468257.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 140436522642 in words is "one hundred forty billion, four hundred thirty-six million, five hundred twenty-two thousand, six hundred forty-two".