40102032 has 20 divisors (see below), whose sum is σ = 103597040. Its totient is φ = 13367328.

The previous prime is 40102001. The next prime is 40102033. The reversal of 40102032 is 23020104.

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

It is a junction number, because it is equal to n+sod(n) for n = 40101999 and 40102017.

It is not an unprimeable number, because it can be changed into a prime (40102033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417682 + ... + 417777.

It is an arithmetic number, because the mean of its divisors is an integer number (5179852).

Almost surely, 2^40102032 is an apocalyptic number.

It is an amenable number.

40102032 is an abundant number, since it is smaller than the sum of its proper divisors (63495008).

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

40102032 is a wasteful number, since it uses less digits than its factorization.

40102032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835470 (or 835464 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 40102032 is about 6332.6165208388. The cubic root of 40102032 is about 342.2857295482.

Adding to 40102032 its reverse (23020104), we get a palindrome (63122136).

The spelling of 40102032 in words is "forty million, one hundred two thousand, thirty-two".