1423181272 has 16 divisors (see below), whose sum is σ = 2670845400. Its totient is φ = 710955840.

The previous prime is 1423181251. The next prime is 1423181273. The reversal of 1423181272 is 2721813241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423181273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69754 + ... + 87817.

Almost surely, 2^1423181272 is an apocalyptic number.

It is an amenable number.

1423181272 is a deficient number, since it is larger than the sum of its proper divisors (1247664128).

1423181272 is a wasteful number, since it uses less digits than its factorization.

1423181272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158706 (or 158702 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 1423181272 is about 37725.0748441935. The cubic root of 1423181272 is about 1124.8296096182.

The spelling of 1423181272 in words is "one billion, four hundred twenty-three million, one hundred eighty-one thousand, two hundred seventy-two".