1242902320 has 60 divisors (see below), whose sum is σ = 3176359200. Its totient is φ = 451960960.

The previous prime is 1242902303. The next prime is 1242902321. The reversal of 1242902320 is 232092421.

It is a super-2 number, since 2×1242902320² = 3089612354122764800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242902321) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 54520 + ... + 73879.

It is an arithmetic number, because the mean of its divisors is an integer number (52939320).

Almost surely, 2^1242902320 is an apocalyptic number.

1242902320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242902320 is an abundant number, since it is smaller than the sum of its proper divisors (1933456880).

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

1242902320 is a wasteful number, since it uses less digits than its factorization.

1242902320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128434 (or 128417 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1242902320 is about 35254.8198123320. The cubic root of 1242902320 is about 1075.1746087385.

Adding to 1242902320 its reverse (232092421), we get a palindrome (1474994741).

The spelling of 1242902320 in words is "one billion, two hundred forty-two million, nine hundred two thousand, three hundred twenty".