68242040 has 32 divisors (see below), whose sum is σ = 157293360. Its totient is φ = 26630400.

The previous prime is 68242039. The next prime is 68242043. The reversal of 68242040 is 4024286.

68242040 is nontrivially palindromic in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68242043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19166 + ... + 22445.

Almost surely, 2^68242040 is an apocalyptic number.

It is an amenable number.

68242040 is an abundant number, since it is smaller than the sum of its proper divisors (89051320).

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

68242040 is a wasteful number, since it uses less digits than its factorization.

68242040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41663 (or 41659 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 68242040 is about 8260.8740457654. The cubic root of 68242040 is about 408.6492131186.

The spelling of 68242040 in words is "sixty-eight million, two hundred forty-two thousand, forty".