42851907 has 12 divisors (see below), whose sum is σ = 70739760. Its totient is φ = 24486768.

The previous prime is 42851899. The next prime is 42851911. The reversal of 42851907 is 70915824.

It is not a de Polignac number, because 42851907 - 2³ = 42851899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42851947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340032 + ... + 340157.

It is an arithmetic number, because the mean of its divisors is an integer number (5894980).

Almost surely, 2^42851907 is an apocalyptic number.

42851907 is a deficient number, since it is larger than the sum of its proper divisors (27887853).

42851907 is a wasteful number, since it uses less digits than its factorization.

42851907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680202 (or 680199 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 42851907 is about 6546.1367996705. The cubic root of 42851907 is about 349.9371506196.

The spelling of 42851907 in words is "forty-two million, eight hundred fifty-one thousand, nine hundred seven".