1242112402 has 8 divisors (see below), whose sum is σ = 1923270912. Its totient is φ = 601022100.

The previous prime is 1242112387. The next prime is 1242112409. The reversal of 1242112402 is 2042112421.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1242112402.

It is not an unprimeable number, because it can be changed into a prime (1242112409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10016974 + ... + 10017097.

It is an arithmetic number, because the mean of its divisors is an integer number (240408864).

Almost surely, 2^1242112402 is an apocalyptic number.

1242112402 is a deficient number, since it is larger than the sum of its proper divisors (681158510).

1242112402 is a wasteful number, since it uses less digits than its factorization.

1242112402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20034104.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1242112402 is about 35243.6150529426. The cubic root of 1242112402 is about 1074.9467871983.

Adding to 1242112402 its sum of digits (19), we get a palindrome (1242112421).

Adding to 1242112402 its reverse (2042112421), we get a palindrome (3284224823).

The spelling of 1242112402 in words is "one billion, two hundred forty-two million, one hundred twelve thousand, four hundred two".