40401012 has 24 divisors (see below), whose sum is σ = 96276096. Its totient is φ = 13180288.

The previous prime is 40401001. The next prime is 40401013. The reversal of 40401012 is 21010404.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401013) 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, 35253 + ... + 36380.

It is an arithmetic number, because the mean of its divisors is an integer number (4011504).

Almost surely, 2^40401012 is an apocalyptic number.

It is an amenable number.

40401012 is an abundant number, since it is smaller than the sum of its proper divisors (55875084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40401012 is a wasteful number, since it uses less digits than its factorization.

40401012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71687 (or 71685 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 40401012 is about 6356.1790409019. The cubic root of 40401012 is about 343.1342593909.

Adding to 40401012 its reverse (21010404), we get a palindrome (61411416).

The spelling of 40401012 in words is "forty million, four hundred one thousand, twelve".