1242365109 has 8 divisors (see below), whose sum is σ = 1656657600. Its totient is φ = 828158016.

The previous prime is 1242365107. The next prime is 1242365119. The reversal of 1242365109 is 9015632421.

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

It is not a de Polignac number, because 1242365109 - 2¹ = 1242365107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242365109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242365107) 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, 30792 + ... + 58590.

It is an arithmetic number, because the mean of its divisors is an integer number (207082200).

Almost surely, 2^1242365109 is an apocalyptic number.

It is an amenable number.

1242365109 is a deficient number, since it is larger than the sum of its proper divisors (414292491).

1242365109 is a wasteful number, since it uses less digits than its factorization.

1242365109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42699.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1242365109 is about 35247.2000164552. The cubic root of 1242365109 is about 1075.0196813415.

The spelling of 1242365109 in words is "one billion, two hundred forty-two million, three hundred sixty-five thousand, one hundred nine".