1423621732 has 48 divisors (see below), whose sum is σ = 2719749312. Its totient is φ = 648109440.

The previous prime is 1423621729. The next prime is 1423621733. The reversal of 1423621732 is 2371263241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1423621694 and 1423621703.

It is not an unprimeable number, because it can be changed into a prime (1423621733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1841298 + ... + 1842070.

It is an arithmetic number, because the mean of its divisors is an integer number (56661444).

Almost surely, 2^1423621732 is an apocalyptic number.

It is an amenable number.

1423621732 is a deficient number, since it is larger than the sum of its proper divisors (1296127580).

1423621732 is a wasteful number, since it uses less digits than its factorization.

1423621732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1226 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 1423621732 is about 37730.9121543596. The cubic root of 1423621732 is about 1124.9456387230.

Adding to 1423621732 its reverse (2371263241), we get a palindrome (3794884973).

The spelling of 1423621732 in words is "one billion, four hundred twenty-three million, six hundred twenty-one thousand, seven hundred thirty-two".