40137427 has 4 divisors (see below), whose sum is σ = 43786296. Its totient is φ = 36488560.

The previous prime is 40137413. The next prime is 40137431. The reversal of 40137427 is 72473104.

40137427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40137427 is a prime.

It is a super-2 number, since 2×40137427² = 3222026092360658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40137395 and 40137404.

It is not an unprimeable number, because it can be changed into a prime (40137407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824418 + ... + 1824439.

It is an arithmetic number, because the mean of its divisors is an integer number (10946574).

Almost surely, 2^40137427 is an apocalyptic number.

40137427 is a deficient number, since it is larger than the sum of its proper divisors (3648869).

40137427 is a wasteful number, since it uses less digits than its factorization.

40137427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648868.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 40137427 is about 6335.4105628602. The cubic root of 40137427 is about 342.3864030897.

The spelling of 40137427 in words is "forty million, one hundred thirty-seven thousand, four hundred twenty-seven".