40423051 has 4 divisors (see below), whose sum is σ = 42550600. Its totient is φ = 38295504.

The previous prime is 40423001. The next prime is 40423057. The reversal of 40423051 is 15032404.

40423051 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 not a de Polignac number, because 40423051 - 2¹⁹ = 39898763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 2127529 = 40423051 / (4 + 0 + 4 + 2 + 3 + 0 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40423057) 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, 1063746 + ... + 1063783.

It is an arithmetic number, because the mean of its divisors is an integer number (10637650).

Almost surely, 2^40423051 is an apocalyptic number.

40423051 is a deficient number, since it is larger than the sum of its proper divisors (2127549).

40423051 is a wasteful number, since it uses less digits than its factorization.

40423051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127548.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40423051 is about 6357.9124718731. The cubic root of 40423051 is about 343.1966419971.

Adding to 40423051 its reverse (15032404), we get a palindrome (55455455).

The spelling of 40423051 in words is "forty million, four hundred twenty-three thousand, fifty-one".