1242605634 has 8 divisors (see below), whose sum is σ = 2485211280. Its totient is φ = 414201876.

The previous prime is 1242605621. The next prime is 1242605641. The reversal of 1242605634 is 4365062421.

It is a sphenic number, since it is the product of 3 distinct primes.

1242605634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1242605595 and 1242605604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103550464 + ... + 103550475.

It is an arithmetic number, because the mean of its divisors is an integer number (310651410).

Almost surely, 2^1242605634 is an apocalyptic number.

1242605634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1242605634 is a wasteful number, since it uses less digits than its factorization.

1242605634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207100944.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1242605634 is about 35250.6118244776. The cubic root of 1242605634 is about 1075.0890523668.

The spelling of 1242605634 in words is "one billion, two hundred forty-two million, six hundred five thousand, six hundred thirty-four".