71489942 has 4 divisors (see below), whose sum is σ = 107234916. Its totient is φ = 35744970.

The previous prime is 71489933. The next prime is 71489953. The reversal of 71489942 is 24998417.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×71489942² = 10221623614326728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71489893 and 71489902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17872484 + ... + 17872487.

It is an arithmetic number, because the mean of its divisors is an integer number (26808729).

Almost surely, 2^71489942 is an apocalyptic number.

71489942 is a deficient number, since it is larger than the sum of its proper divisors (35744974).

71489942 is a wasteful number, since it uses less digits than its factorization.

71489942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35744973.

The product of its digits is 145152, while the sum is 44.

The square root of 71489942 is about 8455.1724997187. The cubic root of 71489942 is about 415.0320621670.

The spelling of 71489942 in words is "seventy-one million, four hundred eighty-nine thousand, nine hundred forty-two".