1242155002 has 16 divisors (see below), whose sum is σ = 2035955232. Its totient is φ = 563688720.

The previous prime is 1242154987. The next prime is 1242155021. The reversal of 1242155002 is 2005512421.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32568 + ... + 59539.

It is an arithmetic number, because the mean of its divisors is an integer number (127247202).

Almost surely, 2^1242155002 is an apocalyptic number.

1242155002 is a deficient number, since it is larger than the sum of its proper divisors (793800230).

1242155002 is a wasteful number, since it uses less digits than its factorization.

1242155002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92733.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1242155002 is about 35244.2194125505. The cubic root of 1242155002 is about 1074.9590759975.

Adding to 1242155002 its reverse (2005512421), we get a palindrome (3247667423).

The spelling of 1242155002 in words is "one billion, two hundred forty-two million, one hundred fifty-five thousand, two".