40431045 has 16 divisors (see below), whose sum is σ = 66067200. Its totient is φ = 21104064.

The previous prime is 40431023. The next prime is 40431059. The reversal of 40431045 is 54013404.

It is not a de Polignac number, because 40431045 - 2¹² = 40426949 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27970 + ... + 29379.

It is an arithmetic number, because the mean of its divisors is an integer number (4129200).

Almost surely, 2^40431045 is an apocalyptic number.

It is an amenable number.

40431045 is a deficient number, since it is larger than the sum of its proper divisors (25636155).

40431045 is a wasteful number, since it uses less digits than its factorization.

40431045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57404.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40431045 is about 6358.5411062601. The cubic root of 40431045 is about 343.2192638515.

Adding to 40431045 its reverse (54013404), we get a palindrome (94444449).

The spelling of 40431045 in words is "forty million, four hundred thirty-one thousand, forty-five".