42921437 has 12 divisors (see below), whose sum is σ = 48926880. Its totient is φ = 37531728.

The previous prime is 42921401. The next prime is 42921451. The reversal of 42921437 is 73412924.

It is not a de Polignac number, because 42921437 - 2¹⁸ = 42659293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42921457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3473 + ... + 9894.

It is an arithmetic number, because the mean of its divisors is an integer number (4077240).

Almost surely, 2^42921437 is an apocalyptic number.

It is an amenable number.

42921437 is a deficient number, since it is larger than the sum of its proper divisors (6005443).

42921437 is a wasteful number, since it uses less digits than its factorization.

42921437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13412 (or 13399 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 42921437 is about 6551.4454130367. The cubic root of 42921437 is about 350.1263135921.

The spelling of 42921437 in words is "forty-two million, nine hundred twenty-one thousand, four hundred thirty-seven".