1242402104 has 8 divisors (see below), whose sum is σ = 2329503960. Its totient is φ = 621201048.

The previous prime is 1242402101. The next prime is 1242402127. The reversal of 1242402104 is 4012042421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242402101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77650124 + ... + 77650139.

It is an arithmetic number, because the mean of its divisors is an integer number (291187995).

Almost surely, 2^1242402104 is an apocalyptic number.

It is an amenable number.

1242402104 is a deficient number, since it is larger than the sum of its proper divisors (1087101856).

1242402104 is a wasteful number, since it uses less digits than its factorization.

1242402104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155300269 (or 155300265 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1242402104 is about 35247.7248060070. The cubic root of 1242402104 is about 1075.0303518382.

Adding to 1242402104 its reverse (4012042421), we get a palindrome (5254444525).

The spelling of 1242402104 in words is "one billion, two hundred forty-two million, four hundred two thousand, one hundred four".