1102123042 has 4 divisors (see below), whose sum is σ = 1653184566. Its totient is φ = 551061520.

The previous prime is 1102123031. The next prime is 1102123049. The reversal of 1102123042 is 2403212011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 855036081 + 247086961 = 29241^2 + 15719^2 .

It is not an unprimeable number, because it can be changed into a prime (1102123049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275530759 + ... + 275530762.

Almost surely, 2^1102123042 is an apocalyptic number.

1102123042 is a deficient number, since it is larger than the sum of its proper divisors (551061524).

1102123042 is an equidigital number, since it uses as much as digits as its factorization.

1102123042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551061523.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1102123042 is about 33198.2385376092. The cubic root of 1102123042 is about 1032.9438020049.

Adding to 1102123042 its reverse (2403212011), we get a palindrome (3505335053).

The spelling of 1102123042 in words is "one billion, one hundred two million, one hundred twenty-three thousand, forty-two".