1242622887 has 32 divisors (see below), whose sum is σ = 1850714880. Its totient is φ = 735264000.

The previous prime is 1242622873. The next prime is 1242622891. The reversal of 1242622887 is 7882262421.

It is not a de Polignac number, because 1242622887 - 2¹⁴ = 1242606503 is a prime.

It is a super-2 number, since 2×1242622887² = 3088223278592429538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242622847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277587 + ... + 282027.

It is an arithmetic number, because the mean of its divisors is an integer number (57834840).

Almost surely, 2^1242622887 is an apocalyptic number.

1242622887 is a deficient number, since it is larger than the sum of its proper divisors (608091993).

1242622887 is a wasteful number, since it uses less digits than its factorization.

1242622887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655.

The product of its digits is 172032, while the sum is 42.

The square root of 1242622887 is about 35250.8565427849. The cubic root of 1242622887 is about 1075.0940280472.

The spelling of 1242622887 in words is "one billion, two hundred forty-two million, six hundred twenty-two thousand, eight hundred eighty-seven".