40456123 has 4 divisors (see below), whose sum is σ = 41141880. Its totient is φ = 39770368.

The previous prime is 40456121. The next prime is 40456151. The reversal of 40456123 is 32165404.

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

It is a cyclic number.

It is not a de Polignac number, because 40456123 - 2¹ = 40456121 is a prime.

It is a super-2 number, since 2×40456123² = 3273395776382258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40456121) 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, 342790 + ... + 342907.

It is an arithmetic number, because the mean of its divisors is an integer number (10285470).

Almost surely, 2^40456123 is an apocalyptic number.

40456123 is a deficient number, since it is larger than the sum of its proper divisors (685757).

40456123 is an equidigital number, since it uses as much as digits as its factorization.

40456123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685756.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40456123 is about 6360.5127937927. The cubic root of 40456123 is about 343.2902115908.

The spelling of 40456123 in words is "forty million, four hundred fifty-six thousand, one hundred twenty-three".