420042653 has 16 divisors (see below), whose sum is σ = 443750400. Its totient is φ = 397061040.

The previous prime is 420042617. The next prime is 420042659. The reversal of 420042653 is 356240024.

It is a cyclic number.

It is not a de Polignac number, because 420042653 - 2²⁰ = 418994077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420042659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326750 + ... + 328032.

It is an arithmetic number, because the mean of its divisors is an integer number (27734400).

Almost surely, 2^420042653 is an apocalyptic number.

It is an amenable number.

420042653 is a deficient number, since it is larger than the sum of its proper divisors (23707747).

420042653 is a wasteful number, since it uses less digits than its factorization.

420042653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552.

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

The square root of 420042653 is about 20494.9421321457. The cubic root of 420042653 is about 748.9125888855.

Adding to 420042653 its reverse (356240024), we get a palindrome (776282677).

The spelling of 420042653 in words is "four hundred twenty million, forty-two thousand, six hundred fifty-three".