40142254 has 8 divisors (see below), whose sum is σ = 60271848. Its totient is φ = 20051640.

The previous prime is 40142251. The next prime is 40142257. The reversal of 40142254 is 45224104.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40142251) and next prime (40142257).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40142254² = 3222801112401032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142251) 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, 7017 + ... + 11380.

It is an arithmetic number, because the mean of its divisors is an integer number (7533981).

Almost surely, 2^40142254 is an apocalyptic number.

40142254 is a deficient number, since it is larger than the sum of its proper divisors (20129594).

40142254 is a wasteful number, since it uses less digits than its factorization.

40142254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19490.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40142254 is about 6335.7915054080. The cubic root of 40142254 is about 342.4001278768.

Adding to 40142254 its reverse (45224104), we get a palindrome (85366358).

The spelling of 40142254 in words is "forty million, one hundred forty-two thousand, two hundred fifty-four".