40122859 has 4 divisors (see below), whose sum is σ = 45854704. Its totient is φ = 34391016.

The previous prime is 40122853. The next prime is 40122871. The reversal of 40122859 is 95822104.

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-40122859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40122859.

It is not an unprimeable number, because it can be changed into a prime (40122853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2865912 + ... + 2865925.

It is an arithmetic number, because the mean of its divisors is an integer number (11463676).

Almost surely, 2^40122859 is an apocalyptic number.

40122859 is a deficient number, since it is larger than the sum of its proper divisors (5731845).

40122859 is an equidigital number, since it uses as much as digits as its factorization.

40122859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731844.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 40122859 is about 6334.2607303457. The cubic root of 40122859 is about 342.3449746851.

The spelling of 40122859 in words is "forty million, one hundred twenty-two thousand, eight hundred fifty-nine".