40342051 has 4 divisors (see below), whose sum is σ = 40410000. Its totient is φ = 40274104.

The previous prime is 40342039. The next prime is 40342079. The reversal of 40342051 is 15024304.

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 40342051 - 2¹⁷ = 40210979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40342021) 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, 33076 + ... + 34273.

It is an arithmetic number, because the mean of its divisors is an integer number (10102500).

Almost surely, 2^40342051 is an apocalyptic number.

40342051 is a deficient number, since it is larger than the sum of its proper divisors (67949).

40342051 is an equidigital number, since it uses as much as digits as its factorization.

40342051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67948.

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

The square root of 40342051 is about 6351.5392622576. The cubic root of 40342051 is about 342.9672554144.

Adding to 40342051 its reverse (15024304), we get a palindrome (55366355).

The spelling of 40342051 in words is "forty million, three hundred forty-two thousand, fifty-one".