40342053 has 4 divisors (see below), whose sum is σ = 53789408. Its totient is φ = 26894700.

The previous prime is 40342039. The next prime is 40342079. The reversal of 40342053 is 35024304.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40342053 - 2⁵ = 40342021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342013) 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, 6723673 + ... + 6723678.

It is an arithmetic number, because the mean of its divisors is an integer number (13447352).

Almost surely, 2^40342053 is an apocalyptic number.

It is an amenable number.

40342053 is a deficient number, since it is larger than the sum of its proper divisors (13447355).

40342053 is a wasteful number, since it uses less digits than its factorization.

40342053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13447354.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 40342053 is about 6351.5394196998. The cubic root of 40342053 is about 342.9672610820.

Adding to 40342053 its reverse (35024304), we get a palindrome (75366357).

The spelling of 40342053 in words is "forty million, three hundred forty-two thousand, fifty-three".