71242994 has 8 divisors (see below), whose sum is σ = 109471068. Its totient is φ = 34752640.

The previous prime is 71242993. The next prime is 71242999. The reversal of 71242994 is 49924217.

It can be written as a sum of positive squares in 2 ways, for example, as 71182969 + 60025 = 8437^2 + 245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71242993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434327 + ... + 434490.

Almost surely, 2^71242994 is an apocalyptic number.

71242994 is a deficient number, since it is larger than the sum of its proper divisors (38228074).

71242994 is a wasteful number, since it uses less digits than its factorization.

71242994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868860.

The product of its digits is 36288, while the sum is 38.

The square root of 71242994 is about 8440.5564982411. The cubic root of 71242994 is about 414.5536285398.

The spelling of 71242994 in words is "seventy-one million, two hundred forty-two thousand, nine hundred ninety-four".