420113155 has 32 divisors (see below), whose sum is σ = 629803008. Its totient is φ = 261360000.

The previous prime is 420113153. The next prime is 420113167. The reversal of 420113155 is 551311024.

It is a happy number.

It is not a de Polignac number, because 420113155 - 2¹ = 420113153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420113153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288409 + ... + 289861.

It is an arithmetic number, because the mean of its divisors is an integer number (19681344).

Almost surely, 2^420113155 is an apocalyptic number.

420113155 is a deficient number, since it is larger than the sum of its proper divisors (209689853).

420113155 is a wasteful number, since it uses less digits than its factorization.

420113155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 420113155 is about 20496.6620453185. The cubic root of 420113155 is about 748.9544869175.

Adding to 420113155 its reverse (551311024), we get a palindrome (971424179).

The spelling of 420113155 in words is "four hundred twenty million, one hundred thirteen thousand, one hundred fifty-five".