40337421 has 16 divisors (see below), whose sum is σ = 55133184. Its totient is φ = 26221104.

The previous prime is 40337411. The next prime is 40337441. The reversal of 40337421 is 12473304.

It is not a de Polignac number, because 40337421 - 2¹⁴ = 40321037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40337391 and 40337400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40337411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73470 + ... + 74016.

It is an arithmetic number, because the mean of its divisors is an integer number (3445824).

Almost surely, 2^40337421 is an apocalyptic number.

It is an amenable number.

40337421 is a deficient number, since it is larger than the sum of its proper divisors (14795763).

40337421 is a wasteful number, since it uses less digits than its factorization.

40337421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 40337421 is about 6351.1747732211. The cubic root of 40337421 is about 342.9541342905.

The spelling of 40337421 in words is "forty million, three hundred thirty-seven thousand, four hundred twenty-one".