1240155102 has 16 divisors (see below), whose sum is σ = 2522350080. Its totient is φ = 406378392.

The previous prime is 1240155079. The next prime is 1240155121. The reversal of 1240155102 is 2015510421.

It is a congruent number.

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, 1751278 + ... + 1751985.

It is an arithmetic number, because the mean of its divisors is an integer number (157646880).

Almost surely, 2^1240155102 is an apocalyptic number.

1240155102 is an abundant number, since it is smaller than the sum of its proper divisors (1282194978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240155102 is a wasteful number, since it uses less digits than its factorization.

1240155102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503327.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1240155102 is about 35215.8359548655. The cubic root of 1240155102 is about 1074.3818626237.

Adding to 1240155102 its reverse (2015510421), we get a palindrome (3255665523).

The spelling of 1240155102 in words is "one billion, two hundred forty million, one hundred fifty-five thousand, one hundred two".