40140510 has 32 divisors (see below), whose sum is σ = 97662240. Its totient is φ = 10556928.

The previous prime is 40140493. The next prime is 40140511. The reversal of 40140510 is 1504104.

It is a super-2 number, since 2×40140510² = 3222521086120200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40140510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6975 + ... + 11354.

It is an arithmetic number, because the mean of its divisors is an integer number (3051945).

Almost surely, 2^40140510 is an apocalyptic number.

40140510 is an abundant number, since it is smaller than the sum of its proper divisors (57521730).

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

40140510 is a wasteful number, since it uses less digits than its factorization.

40140510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18412.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 40140510 is about 6335.6538731215. The cubic root of 40140510 is about 342.3951692243.

Adding to 40140510 its reverse (1504104), we get a palindrome (41644614).

The spelling of 40140510 in words is "forty million, one hundred forty thousand, five hundred ten".