42909537 has 8 divisors (see below), whose sum is σ = 62413920. Its totient is φ = 26005760.

The previous prime is 42909533. The next prime is 42909553. The reversal of 42909537 is 73590924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42909537 - 2² = 42909533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42909495 and 42909504.

It is not an unprimeable number, because it can be changed into a prime (42909533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650112 + ... + 650177.

It is an arithmetic number, because the mean of its divisors is an integer number (7801740).

Almost surely, 2^42909537 is an apocalyptic number.

It is an amenable number.

42909537 is a deficient number, since it is larger than the sum of its proper divisors (19504383).

42909537 is a wasteful number, since it uses less digits than its factorization.

42909537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300303.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 42909537 is about 6550.5371535470. The cubic root of 42909537 is about 350.0939530086.

The spelling of 42909537 in words is "forty-two million, nine hundred nine thousand, five hundred thirty-seven".