1242444672 has 96 divisors (see below), whose sum is σ = 4086042480. Its totient is φ = 354981888.

The previous prime is 1242444667. The next prime is 1242444673. The reversal of 1242444672 is 2764442421.

1242444672 is a `hidden beast` number, since 124 + 24 + 446 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242444673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68973 + ... + 85100.

Almost surely, 2^1242444672 is an apocalyptic number.

1242444672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1242444672 is an abundant number, since it is smaller than the sum of its proper divisors (2843597808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242444672 is a wasteful number, since it uses less digits than its factorization.

1242444672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154100 (or 154085 counting only the distinct ones).

The product of its digits is 86016, while the sum is 36.

The square root of 1242444672 is about 35248.3286412278. The cubic root of 1242444672 is about 1075.0426294975.

The spelling of 1242444672 in words is "one billion, two hundred forty-two million, four hundred forty-four thousand, six hundred seventy-two".