40142453 has 16 divisors (see below), whose sum is σ = 44330496. Its totient is φ = 36123840.

The previous prime is 40142449. The next prime is 40142483. The reversal of 40142453 is 35424104.

It is a cyclic number.

It is not a de Polignac number, because 40142453 - 2² = 40142449 is a prime.

It is a super-2 number, since 2×40142453² = 3222833065714418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142413) 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, 176726 + ... + 176952.

It is an arithmetic number, because the mean of its divisors is an integer number (2770656).

Almost surely, 2^40142453 is an apocalyptic number.

It is an amenable number.

40142453 is a deficient number, since it is larger than the sum of its proper divisors (4188043).

40142453 is a wasteful number, since it uses less digits than its factorization.

40142453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40142453 is about 6335.8072098194. The cubic root of 40142453 is about 342.4006936773.

Adding to 40142453 its reverse (35424104), we get a palindrome (75566557).

The spelling of 40142453 in words is "forty million, one hundred forty-two thousand, four hundred fifty-three".