71742642 has 8 divisors (see below), whose sum is σ = 143485296. Its totient is φ = 23914212.

The previous prime is 71742641. The next prime is 71742647. The reversal of 71742642 is 24624717.

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

71742642 is an admirable number.

It is a super-2 number, since 2×71742642² = 10294013362280328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71742641) 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, 5978548 + ... + 5978559.

It is an arithmetic number, because the mean of its divisors is an integer number (17935662).

Almost surely, 2^71742642 is an apocalyptic number.

71742642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71742642 is a wasteful number, since it uses less digits than its factorization.

71742642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957112.

The product of its digits is 18816, while the sum is 33.

The square root of 71742642 is about 8470.1028329059. The cubic root of 71742642 is about 415.5205004359.

The spelling of 71742642 in words is "seventy-one million, seven hundred forty-two thousand, six hundred forty-two".