1242923892 has 24 divisors (see below), whose sum is σ = 3314463936. Its totient is φ = 355121088.

The previous prime is 1242923837. The next prime is 1242923917. The reversal of 1242923892 is 2983292421.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7398273 + ... + 7398440.

It is an arithmetic number, because the mean of its divisors is an integer number (138102664).

Almost surely, 2^1242923892 is an apocalyptic number.

1242923892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1242923892 is an abundant number, since it is smaller than the sum of its proper divisors (2071540044).

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

1242923892 is a wasteful number, since it uses less digits than its factorization.

1242923892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14796727 (or 14796725 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 1242923892 is about 35255.1257549877. The cubic root of 1242923892 is about 1075.1808290000.

The spelling of 1242923892 in words is "one billion, two hundred forty-two million, nine hundred twenty-three thousand, eight hundred ninety-two".