1423005155 has 32 divisors (see below), whose sum is σ = 2022064128. Its totient is φ = 947721600.

The previous prime is 1423005151. The next prime is 1423005169. The reversal of 1423005155 is 5515003241.

It is not a de Polignac number, because 1423005155 - 2² = 1423005151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423005151) 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, 82970 + ... + 98640.

It is an arithmetic number, because the mean of its divisors is an integer number (63189504).

Almost surely, 2^1423005155 is an apocalyptic number.

1423005155 is a deficient number, since it is larger than the sum of its proper divisors (599058973).

1423005155 is a wasteful number, since it uses less digits than its factorization.

1423005155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15827.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1423005155 is about 37722.7405552672. The cubic root of 1423005155 is about 1124.7832089259.

Adding to 1423005155 its reverse (5515003241), we get a palindrome (6938008396).

The spelling of 1423005155 in words is "one billion, four hundred twenty-three million, five thousand, one hundred fifty-five".