40213132 has 24 divisors (see below), whose sum is σ = 71904560. Its totient is φ = 19673280.

The previous prime is 40213093. The next prime is 40213171. The reversal of 40213132 is 23131204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40213093) and next prime (40213171).

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48094 + ... + 48922.

Almost surely, 2^40213132 is an apocalyptic number.

It is an amenable number.

40213132 is a deficient number, since it is larger than the sum of its proper divisors (31691428).

40213132 is a wasteful number, since it uses less digits than its factorization.

40213132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40213132 is about 6341.3824991085. The cubic root of 40213132 is about 342.6015313388.

Adding to 40213132 its reverse (23131204), we get a palindrome (63344336).

The spelling of 40213132 in words is "forty million, two hundred thirteen thousand, one hundred thirty-two".