71844942 has 24 divisors (see below), whose sum is σ = 155595384. Its totient is φ = 22105824.

The previous prime is 71844937. The next prime is 71844943. The reversal of 71844942 is 24944817.

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 71844942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71844943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34413 + ... + 36440.

It is an arithmetic number, because the mean of its divisors is an integer number (6483141).

Almost surely, 2^71844942 is an apocalyptic number.

71844942 is an abundant number, since it is smaller than the sum of its proper divisors (83750442).

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

71844942 is a wasteful number, since it uses less digits than its factorization.

71844942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70884 (or 70871 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 71844942 is about 8476.1395694030. The cubic root of 71844942 is about 415.7179077130.

The spelling of 71844942 in words is "seventy-one million, eight hundred forty-four thousand, nine hundred forty-two".