423421154 has 16 divisors (see below), whose sum is σ = 686228928. Its totient is φ = 194784912.

The previous prime is 423421153. The next prime is 423421169. The reversal of 423421154 is 451124324.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423421153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18542 + ... + 34505.

It is an arithmetic number, because the mean of its divisors is an integer number (42889308).

Almost surely, 2^423421154 is an apocalyptic number.

423421154 is a deficient number, since it is larger than the sum of its proper divisors (262807774).

423421154 is a wasteful number, since it uses less digits than its factorization.

423421154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53369.

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

The square root of 423421154 is about 20577.1998580954. The cubic root of 423421154 is about 750.9151223547.

Adding to 423421154 its reverse (451124324), we get a palindrome (874545478).

The spelling of 423421154 in words is "four hundred twenty-three million, four hundred twenty-one thousand, one hundred fifty-four".