40642533 has 8 divisors (see below), whose sum is σ = 60211200. Its totient is φ = 27095004.

The previous prime is 40642517. The next prime is 40642549. The reversal of 40642533 is 33524604.

40642533 is a `hidden beast` number, since 406 + 4 + 253 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (40642517) and next prime (40642549).

It is not a de Polignac number, because 40642533 - 2⁴ = 40642517 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: 1505279 = 40642533 / (4 + 0 + 6 + 4 + 2 + 5 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 40642497 and 40642506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40642933) 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, 752613 + ... + 752666.

It is an arithmetic number, because the mean of its divisors is an integer number (7526400).

Almost surely, 2^40642533 is an apocalyptic number.

It is an amenable number.

40642533 is a deficient number, since it is larger than the sum of its proper divisors (19568667).

40642533 is a wasteful number, since it uses less digits than its factorization.

40642533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505288 (or 1505282 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 40642533 is about 6375.1496453025. The cubic root of 40642533 is about 343.8166641838.

It can be divided in two parts, 4064253 and 3, that added together give a square (4064256 = 2016²).

The spelling of 40642533 in words is "forty million, six hundred forty-two thousand, five hundred thirty-three".