40402340427 has 8 divisors (see below), whose sum is σ = 53872399360. Its totient is φ = 26933587560.

The previous prime is 40402340413. The next prime is 40402340443. The reversal of 40402340427 is 72404320404.

It is a happy number.

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

It is not a de Polignac number, because 40402340427 - 2¹⁹ = 40401816139 is a prime.

It is a super-2 number, since 2×40402340427² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40402340394 and 40402340403.

It is not an unprimeable number, because it can be changed into a prime (40402342427) 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, 251899 + ... + 379812.

It is an arithmetic number, because the mean of its divisors is an integer number (6734049920).

Almost surely, 2^40402340427 is an apocalyptic number.

40402340427 is a deficient number, since it is larger than the sum of its proper divisors (13470058933).

40402340427 is a wasteful number, since it uses less digits than its factorization.

40402340427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653033.

The product of its (nonzero) digits is 21504, while the sum is 30.

The spelling of 40402340427 in words is "forty billion, four hundred two million, three hundred forty thousand, four hundred twenty-seven".