1242119902 has 8 divisors (see below), whose sum is σ = 1863809712. Its totient is φ = 620850000.

The previous prime is 1242119897. The next prime is 1242119903. The reversal of 1242119902 is 2099112421.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242119903) 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, 97474 + ... + 109477.

It is an arithmetic number, because the mean of its divisors is an integer number (232976214).

Almost surely, 2^1242119902 is an apocalyptic number.

1242119902 is a deficient number, since it is larger than the sum of its proper divisors (621689810).

1242119902 is a wasteful number, since it uses less digits than its factorization.

1242119902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209954.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1242119902 is about 35243.7214550337. The cubic root of 1242119902 is about 1074.9489507397.

It can be divided in two parts, 12421 and 19902, that multiplied together give a palindrome (247202742).

The spelling of 1242119902 in words is "one billion, two hundred forty-two million, one hundred nineteen thousand, nine hundred two".