40142352 has 20 divisors (see below), whose sum is σ = 103701200. Its totient is φ = 13380768.

The previous prime is 40142341. The next prime is 40142353. The reversal of 40142352 is 25324104.

It is a super-2 number, since 2×40142352² = 3222816848183808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40142353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418102 + ... + 418197.

It is an arithmetic number, because the mean of its divisors is an integer number (5185060).

Almost surely, 2^40142352 is an apocalyptic number.

It is an amenable number.

40142352 is an abundant number, since it is smaller than the sum of its proper divisors (63558848).

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

40142352 is a wasteful number, since it uses less digits than its factorization.

40142352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836310 (or 836304 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40142352 is about 6335.7992392436. The cubic root of 40142352 is about 342.4004065125.

Adding to 40142352 its reverse (25324104), we get a palindrome (65466456).

The spelling of 40142352 in words is "forty million, one hundred forty-two thousand, three hundred fifty-two".