68142951 has 40 divisors (see below), whose sum is σ = 107796480. Its totient is φ = 42810768.

The previous prime is 68142923. The next prime is 68142959. The reversal of 68142951 is 15924186.

It is not a de Polignac number, because 68142951 - 2⁹ = 68142439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68142959) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 146946 + ... + 147408.

It is an arithmetic number, because the mean of its divisors is an integer number (2694912).

Almost surely, 2^68142951 is an apocalyptic number.

68142951 is a deficient number, since it is larger than the sum of its proper divisors (39653529).

68142951 is a wasteful number, since it uses less digits than its factorization.

68142951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 568 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 68142951 is about 8254.8743782083. The cubic root of 68142951 is about 408.4513279808.

The spelling of 68142951 in words is "sixty-eight million, one hundred forty-two thousand, nine hundred fifty-one".