40402134 has 12 divisors (see below), whose sum is σ = 87537996. Its totient is φ = 13467372.

The previous prime is 40402127. The next prime is 40402163. The reversal of 40402134 is 43120404.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2244563 = 40402134 / (4 + 0 + 4 + 0 + 2 + 1 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122264 + ... + 1122299.

It is an arithmetic number, because the mean of its divisors is an integer number (7294833).

Almost surely, 2^40402134 is an apocalyptic number.

40402134 is an abundant number, since it is smaller than the sum of its proper divisors (47135862).

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

40402134 is a wasteful number, since it uses less digits than its factorization.

40402134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244571 (or 2244568 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40402134 is about 6356.2673008614. The cubic root of 40402134 is about 343.1374358219.

Adding to 40402134 its reverse (43120404), we get a palindrome (83522538).

The spelling of 40402134 in words is "forty million, four hundred two thousand, one hundred thirty-four".