1242561162 has 16 divisors (see below), whose sum is σ = 2500005312. Its totient is φ = 411706560.

The previous prime is 1242561157. The next prime is 1242561167. The reversal of 1242561162 is 2611652421.

It is an interprime number because it is at equal distance from previous prime (1242561157) and next prime (1242561167).

It is not an unprimeable number, because it can be changed into a prime (1242561167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619039 + ... + 621042.

It is an arithmetic number, because the mean of its divisors is an integer number (156250332).

Almost surely, 2^1242561162 is an apocalyptic number.

1242561162 is an abundant number, since it is smaller than the sum of its proper divisors (1257444150).

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

1242561162 is a wasteful number, since it uses less digits than its factorization.

1242561162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240253.

The product of its digits is 5760, while the sum is 30.

The square root of 1242561162 is about 35249.9810212715. The cubic root of 1242561162 is about 1075.0762266481.

The spelling of 1242561162 in words is "one billion, two hundred forty-two million, five hundred sixty-one thousand, one hundred sixty-two".