42404337 has 8 divisors (see below), whose sum is σ = 62821280. Its totient is φ = 28269540.

The previous prime is 42404269. The next prime is 42404359. The reversal of 42404337 is 73340424.

It is not a de Polignac number, because 42404337 - 2¹⁰ = 42403313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1570531 = 42404337 / (4 + 2 + 4 + 0 + 4 + 3 + 3 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42404337.

It is not an unprimeable number, because it can be changed into a prime (42404737) 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, 785239 + ... + 785292.

It is an arithmetic number, because the mean of its divisors is an integer number (7852660).

Almost surely, 2^42404337 is an apocalyptic number.

It is an amenable number.

42404337 is a deficient number, since it is larger than the sum of its proper divisors (20416943).

42404337 is a wasteful number, since it uses less digits than its factorization.

42404337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570540 (or 1570534 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 42404337 is about 6511.8612546644. The cubic root of 42404337 is about 348.7145691836.

The spelling of 42404337 in words is "forty-two million, four hundred four thousand, three hundred thirty-seven".