40142490 has 32 divisors (see below), whose sum is σ = 96538176. Its totient is φ = 10682880.

The previous prime is 40142483. The next prime is 40142503. The reversal of 40142490 is 9424104.

It is a super-2 number, since 2×40142490² = 3222839006800200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40142490.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18250 + ... + 20330.

It is an arithmetic number, because the mean of its divisors is an integer number (3016818).

Almost surely, 2^40142490 is an apocalyptic number.

40142490 is an abundant number, since it is smaller than the sum of its proper divisors (56395686).

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

40142490 is a wasteful number, since it uses less digits than its factorization.

40142490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 40142490 is about 6335.8101297308. The cubic root of 40142490 is about 342.4007988761.

Adding to 40142490 its reverse (9424104), we get a palindrome (49566594).

The spelling of 40142490 in words is "forty million, one hundred forty-two thousand, four hundred ninety".