420113433 has 4 divisors (see below), whose sum is σ = 560151248. Its totient is φ = 280075620.

The previous prime is 420113431. The next prime is 420113471. The reversal of 420113433 is 334311024.

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 420113433 - 2¹ = 420113431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420113431) 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, 70018903 + ... + 70018908.

It is an arithmetic number, because the mean of its divisors is an integer number (140037812).

Almost surely, 2^420113433 is an apocalyptic number.

It is an amenable number.

420113433 is a deficient number, since it is larger than the sum of its proper divisors (140037815).

420113433 is a wasteful number, since it uses less digits than its factorization.

420113433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140037814.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 420113433 is about 20496.6688269094. The cubic root of 420113433 is about 748.9546521184.

Adding to 420113433 its reverse (334311024), we get a palindrome (754424457).

The spelling of 420113433 in words is "four hundred twenty million, one hundred thirteen thousand, four hundred thirty-three".