1242134430 has 16 divisors (see below), whose sum is σ = 2981122704. Its totient is φ = 331235840.

The previous prime is 1242134419. The next prime is 1242134479. The reversal of 1242134430 is 344312421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242134430.

It is a congruent number.

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, 20702211 + ... + 20702270.

It is an arithmetic number, because the mean of its divisors is an integer number (186320169).

Almost surely, 2^1242134430 is an apocalyptic number.

1242134430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242134430 is an abundant number, since it is smaller than the sum of its proper divisors (1738988274).

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

1242134430 is a wasteful number, since it uses less digits than its factorization.

1242134430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41404491.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1242134430 is about 35243.9275620638. The cubic root of 1242134430 is about 1074.9531416388.

Adding to 1242134430 its reverse (344312421), we get a palindrome (1586446851).

The spelling of 1242134430 in words is "one billion, two hundred forty-two million, one hundred thirty-four thousand, four hundred thirty".