40140453 has 8 divisors (see below), whose sum is σ = 54198400. Its totient is φ = 26421408.

The previous prime is 40140431. The next prime is 40140461. The reversal of 40140453 is 35404104.

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

It is not a de Polignac number, because 40140453 - 2⁵ = 40140421 is a prime.

It is a super-2 number, since 2×40140453² = 3222511934090418, 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 (40140403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84448 + ... + 84921.

It is an arithmetic number, because the mean of its divisors is an integer number (6774800).

Almost surely, 2^40140453 is an apocalyptic number.

It is an amenable number.

40140453 is a deficient number, since it is larger than the sum of its proper divisors (14057947).

40140453 is a wasteful number, since it uses less digits than its factorization.

40140453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169451.

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

The square root of 40140453 is about 6335.6493747681. The cubic root of 40140453 is about 342.3950071558.

Adding to 40140453 its reverse (35404104), we get a palindrome (75544557).

The spelling of 40140453 in words is "forty million, one hundred forty thousand, four hundred fifty-three".