1242551430 has 24 divisors (see below), whose sum is σ = 3230633952. Its totient is φ = 331347024.

The previous prime is 1242551399. The next prime is 1242551461. The reversal of 1242551430 is 341552421.

1242551430 is a `hidden beast` number, since 124 + 25 + 514 + 3 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1242551399) and next prime (1242551461).

It is a junction number, because it is equal to n+sod(n) for n = 1242551394 and 1242551403.

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, 6902974 + ... + 6903153.

It is an arithmetic number, because the mean of its divisors is an integer number (134609748).

Almost surely, 2^1242551430 is an apocalyptic number.

1242551430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242551430 is an abundant number, since it is smaller than the sum of its proper divisors (1988082522).

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

1242551430 is a wasteful number, since it uses less digits than its factorization.

1242551430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13806140 (or 13806137 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1242551430 is about 35249.8429783737. The cubic root of 1242551430 is about 1075.0734198999.

Subtracting from 1242551430 its reverse (341552421), we obtain a palindrome (900999009).

The spelling of 1242551430 in words is "one billion, two hundred forty-two million, five hundred fifty-one thousand, four hundred thirty".