42920837 has 12 divisors (see below), whose sum is σ = 44523360. Its totient is φ = 41371848.

The previous prime is 42920827. The next prime is 42920863. The reversal of 42920837 is 73802924.

It is not a de Polignac number, because 42920837 - 2¹⁰ = 42919813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42920797 and 42920806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42920827) 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, 256928 + ... + 257094.

It is an arithmetic number, because the mean of its divisors is an integer number (3710280).

Almost surely, 2^42920837 is an apocalyptic number.

It is an amenable number.

42920837 is a deficient number, since it is larger than the sum of its proper divisors (1602523).

42920837 is a wasteful number, since it uses less digits than its factorization.

42920837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 42920837 is about 6551.3996214549. The cubic root of 42920837 is about 350.1246821093.

The spelling of 42920837 in words is "forty-two million, nine hundred twenty thousand, eight hundred thirty-seven".