1242922959 has 12 divisors (see below), whose sum is σ = 1853247552. Its totient is φ = 801885600.

The previous prime is 1242922957. The next prime is 1242922973. The reversal of 1242922959 is 9592292421.

It is a happy number.

It is not a de Polignac number, because 1242922959 - 2¹ = 1242922957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242922957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2227182 + ... + 2227739.

It is an arithmetic number, because the mean of its divisors is an integer number (154437296).

Almost surely, 2^1242922959 is an apocalyptic number.

1242922959 is a deficient number, since it is larger than the sum of its proper divisors (610324593).

1242922959 is a wasteful number, since it uses less digits than its factorization.

1242922959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454958 (or 4454955 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1242922959 is about 35255.1125228668. The cubic root of 1242922959 is about 1075.1805599720.

The spelling of 1242922959 in words is "one billion, two hundred forty-two million, nine hundred twenty-two thousand, nine hundred fifty-nine".