423421145 has 32 divisors (see below), whose sum is σ = 620766720. Its totient is φ = 270927360.

The previous prime is 423421139. The next prime is 423421153. The reversal of 423421145 is 541124324.

It is not a de Polignac number, because 423421145 - 2¹⁰ = 423420121 is a prime.

It is a super-2 number, since 2×423421145² = 358570932066222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26591 + ... + 39419.

It is an arithmetic number, because the mean of its divisors is an integer number (19398960).

Almost surely, 2^423421145 is an apocalyptic number.

It is an amenable number.

423421145 is a deficient number, since it is larger than the sum of its proper divisors (197345575).

423421145 is a wasteful number, since it uses less digits than its factorization.

423421145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12905.

The product of its digits is 3840, while the sum is 26.

The square root of 423421145 is about 20577.1996394067. The cubic root of 423421145 is about 750.9151170344.

Adding to 423421145 its reverse (541124324), we get a palindrome (964545469).

The spelling of 423421145 in words is "four hundred twenty-three million, four hundred twenty-one thousand, one hundred forty-five".