40137423 has 8 divisors (see below), whose sum is σ = 53589936. Its totient is φ = 26721600.

The previous prime is 40137413. The next prime is 40137431. The reversal of 40137423 is 32473104.

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

It is not a de Polignac number, because 40137423 - 2⁴ = 40137407 is a prime.

It is a super-2 number, since 2×40137423² = 3222025450161858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40137393 and 40137402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40137413) 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, 6508 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (6698742).

Almost surely, 2^40137423 is an apocalyptic number.

40137423 is a deficient number, since it is larger than the sum of its proper divisors (13452513).

40137423 is a wasteful number, since it uses less digits than its factorization.

40137423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18345.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 40137423 is about 6335.4102471742. The cubic root of 40137423 is about 342.3863917159.

The spelling of 40137423 in words is "forty million, one hundred thirty-seven thousand, four hundred twenty-three".