1242358280 has 32 divisors (see below), whose sum is σ = 2842689600. Its totient is φ = 488519616.

The previous prime is 1242358267. The next prime is 1242358291. The reversal of 1242358280 is 828532421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242358280.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260852 + ... + 265571.

It is an arithmetic number, because the mean of its divisors is an integer number (88834050).

Almost surely, 2^1242358280 is an apocalyptic number.

1242358280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242358280 is an abundant number, since it is smaller than the sum of its proper divisors (1600331320).

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

1242358280 is a wasteful number, since it uses less digits than its factorization.

1242358280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526493 (or 526489 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 1242358280 is about 35247.1031433790. The cubic root of 1242358280 is about 1075.0177116245.

The spelling of 1242358280 in words is "one billion, two hundred forty-two million, three hundred fifty-eight thousand, two hundred eighty".