1142421972 has 12 divisors (see below), whose sum is σ = 2665651296. Its totient is φ = 380807320.

The previous prime is 1142421967. The next prime is 1142421989. The reversal of 1142421972 is 2791242411.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47600904 + ... + 47600927.

It is an arithmetic number, because the mean of its divisors is an integer number (222137608).

Almost surely, 2^1142421972 is an apocalyptic number.

1142421972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142421972 is an abundant number, since it is smaller than the sum of its proper divisors (1523229324).

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

1142421972 is a wasteful number, since it uses less digits than its factorization.

1142421972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95201838 (or 95201836 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 1142421972 is about 33799.7333125574. The cubic root of 1142421972 is about 1045.3831983692.

The spelling of 1142421972 in words is "one billion, one hundred forty-two million, four hundred twenty-one thousand, nine hundred seventy-two".