1242402102 has 12 divisors (see below), whose sum is σ = 2691871260. Its totient is φ = 414134028.

The previous prime is 1242402101. The next prime is 1242402127. The reversal of 1242402102 is 2012042421.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 69022339 = 1242402102 / (1 + 2 + 4 + 2 + 4 + 0 + 2 + 1 + 0 + 2).

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34511152 + ... + 34511187.

It is an arithmetic number, because the mean of its divisors is an integer number (224322605).

Almost surely, 2^1242402102 is an apocalyptic number.

1242402102 is an abundant number, since it is smaller than the sum of its proper divisors (1449469158).

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

1242402102 is a wasteful number, since it uses less digits than its factorization.

1242402102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69022347 (or 69022344 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1242402102 is about 35247.7247776364. The cubic root of 1242402102 is about 1075.0303512613.

Adding to 1242402102 its reverse (2012042421), we get a palindrome (3254444523).

The spelling of 1242402102 in words is "one billion, two hundred forty-two million, four hundred two thousand, one hundred two".