42678951 has 24 divisors (see below), whose sum is σ = 66539520. Its totient is φ = 24261552.

The previous prime is 42678943. The next prime is 42678953. The reversal of 42678951 is 15987624.

It is not a de Polignac number, because 42678951 - 2³ = 42678943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42678953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32730 + ... + 34008.

It is an arithmetic number, because the mean of its divisors is an integer number (2772480).

Almost surely, 2^42678951 is an apocalyptic number.

42678951 is a deficient number, since it is larger than the sum of its proper divisors (23860569).

42678951 is a wasteful number, since it uses less digits than its factorization.

42678951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1516 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 42678951 is about 6532.9129031390. The cubic root of 42678951 is about 349.4657181567.

The spelling of 42678951 in words is "forty-two million, six hundred seventy-eight thousand, nine hundred fifty-one".