68272042 has 4 divisors (see below), whose sum is σ = 102408066. Its totient is φ = 34136020.

The previous prime is 68272033. The next prime is 68272049. The reversal of 68272042 is 24027286.

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

It can be written as a sum of positive squares in only one way, i.e., 66928761 + 1343281 = 8181^2 + 1159^2 .

It is a super-2 number, since 2×68272042² = 9322143437699528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68271995 and 68272013.

It is not an unprimeable number, because it can be changed into a prime (68272049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17068009 + ... + 17068012.

Almost surely, 2^68272042 is an apocalyptic number.

68272042 is a deficient number, since it is larger than the sum of its proper divisors (34136024).

68272042 is a wasteful number, since it uses less digits than its factorization.

68272042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34136023.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 68272042 is about 8262.6897557636. The cubic root of 68272042 is about 408.7090906633.

The spelling of 68272042 in words is "sixty-eight million, two hundred seventy-two thousand, forty-two".