71889942 has 32 divisors (see below), whose sum is σ = 147420000. Its totient is φ = 23362560.

The previous prime is 71889941. The next prime is 71889947. The reversal of 71889942 is 24998817.

It is a junction number, because it is equal to n+sod(n) for n = 71889891 and 71889900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71889941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56934 + ... + 58182.

It is an arithmetic number, because the mean of its divisors is an integer number (4606875).

Almost surely, 2^71889942 is an apocalyptic number.

71889942 is an abundant number, since it is smaller than the sum of its proper divisors (75530058).

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

71889942 is a wasteful number, since it uses less digits than its factorization.

71889942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488.

The product of its digits is 290304, while the sum is 48.

The square root of 71889942 is about 8478.7936641954. The cubic root of 71889942 is about 415.8046844153.

The spelling of 71889942 in words is "seventy-one million, eight hundred eighty-nine thousand, nine hundred forty-two".