1042102120 has 32 divisors (see below), whose sum is σ = 2468138400. Its totient is φ = 394901568.

The previous prime is 1042102111. The next prime is 1042102123. The reversal of 1042102120 is 212012401.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042102120.

It is not an unprimeable number, because it can be changed into a prime (1042102123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684834 + ... + 686353.

It is an arithmetic number, because the mean of its divisors is an integer number (77129325).

Almost surely, 2^1042102120 is an apocalyptic number.

1042102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042102120 is an abundant number, since it is smaller than the sum of its proper divisors (1426036280).

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

1042102120 is a wasteful number, since it uses less digits than its factorization.

1042102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371217 (or 1371213 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1042102120 is about 32281.6065275568. The cubic root of 1042102120 is about 1013.8415670575.

Adding to 1042102120 its reverse (212012401), we get a palindrome (1254114521).

The spelling of 1042102120 in words is "one billion, forty-two million, one hundred two thousand, one hundred twenty".