1242331100 has 36 divisors (see below), whose sum is σ = 2854442304. Its totient is φ = 467700480.

The previous prime is 1242331073. The next prime is 1242331133. The reversal of 1242331100 is 11332421.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363692 + ... + 367091.

It is an arithmetic number, because the mean of its divisors is an integer number (79290064).

Almost surely, 2^1242331100 is an apocalyptic number.

1242331100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242331100 is an abundant number, since it is smaller than the sum of its proper divisors (1612111204).

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

1242331100 is a wasteful number, since it uses less digits than its factorization.

1242331100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730814 (or 730807 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1242331100 is about 35246.7175776696. The cubic root of 1242331100 is about 1075.0098719122.

Adding to 1242331100 its reverse (11332421), we get a palindrome (1253663521).

The spelling of 1242331100 in words is "one billion, two hundred forty-two million, three hundred thirty-one thousand, one hundred".