42949437 has 4 divisors (see below), whose sum is σ = 57265920. Its totient is φ = 28632956.

The previous prime is 42949433. The next prime is 42949453. The reversal of 42949437 is 73494924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42949437 - 2² = 42949433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42949433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7158237 + ... + 7158242.

It is an arithmetic number, because the mean of its divisors is an integer number (14316480).

Almost surely, 2^42949437 is an apocalyptic number.

It is an amenable number.

42949437 is a deficient number, since it is larger than the sum of its proper divisors (14316483).

42949437 is a wasteful number, since it uses less digits than its factorization.

42949437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14316482.

The product of its digits is 217728, while the sum is 42.

The square root of 42949437 is about 6553.5819976559. The cubic root of 42949437 is about 350.2024325546.

It can be divided in two parts, 4294 and 9437, that added together give a palindrome (13731).

The spelling of 42949437 in words is "forty-two million, nine hundred forty-nine thousand, four hundred thirty-seven".