40242653 has 4 divisors (see below), whose sum is σ = 43901088. Its totient is φ = 36584220.

The previous prime is 40242613. The next prime is 40242659. The reversal of 40242653 is 35624204.

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 a cyclic number.

It is not a de Polignac number, because 40242653 - 2¹⁰ = 40241629 is a prime.

It is a super-2 number, since 2×40242653² = 3238942240956818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40242659) 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, 1829201 + ... + 1829222.

It is an arithmetic number, because the mean of its divisors is an integer number (10975272).

Almost surely, 2^40242653 is an apocalyptic number.

It is an amenable number.

40242653 is a deficient number, since it is larger than the sum of its proper divisors (3658435).

40242653 is a wasteful number, since it uses less digits than its factorization.

40242653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658434.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 40242653 is about 6343.7097190839. The cubic root of 40242653 is about 342.6853469598.

Adding to 40242653 its reverse (35624204), we get a palindrome (75866857).

The spelling of 40242653 in words is "forty million, two hundred forty-two thousand, six hundred fifty-three".