42768031 has 6 divisors (see below), whose sum is σ = 45137832. Its totient is φ = 40516740.

The previous prime is 42768023. The next prime is 42768049. The reversal of 42768031 is 13086724.

It is not a de Polignac number, because 42768031 - 2³ = 42768023 is a prime.

It is a super-2 number, since 2×42768031² = 3658208951233922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42767984 and 42768002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42768091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58875 + ... + 59596.

It is an arithmetic number, because the mean of its divisors is an integer number (7522972).

Almost surely, 2^42768031 is an apocalyptic number.

42768031 is a deficient number, since it is larger than the sum of its proper divisors (2369801).

42768031 is a wasteful number, since it uses less digits than its factorization.

42768031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118509 (or 118490 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 42768031 is about 6539.7271349805. The cubic root of 42768031 is about 349.7086854894.

The spelling of 42768031 in words is "forty-two million, seven hundred sixty-eight thousand, thirty-one".