1242087715 has 16 divisors (see below), whose sum is σ = 1629434880. Its totient is φ = 901431520.

The previous prime is 1242087713. The next prime is 1242087727. The reversal of 1242087715 is 5177802421.

It is not a de Polignac number, because 1242087715 - 2¹ = 1242087713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242087713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2772 + ... + 49918.

It is an arithmetic number, because the mean of its divisors is an integer number (101839680).

Almost surely, 2^1242087715 is an apocalyptic number.

1242087715 is a deficient number, since it is larger than the sum of its proper divisors (387347165).

1242087715 is a wasteful number, since it uses less digits than its factorization.

1242087715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47642.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 1242087715 is about 35243.2648175506. The cubic root of 1242087715 is about 1074.9396656241.

The spelling of 1242087715 in words is "one billion, two hundred forty-two million, eighty-seven thousand, seven hundred fifteen".