1100123142 has 32 divisors (see below), whose sum is σ = 2452291200. Its totient is φ = 326971008.

The previous prime is 1100123117. The next prime is 1100123147. The reversal of 1100123142 is 2413210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100123147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281892 + ... + 285767.

It is an arithmetic number, because the mean of its divisors is an integer number (76634100).

Almost surely, 2^1100123142 is an apocalyptic number.

1100123142 is an abundant number, since it is smaller than the sum of its proper divisors (1352168058).

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

1100123142 is a wasteful number, since it uses less digits than its factorization.

1100123142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567700.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1100123142 is about 33168.1042871009. The cubic root of 1100123142 is about 1032.3186343336.

Adding to 1100123142 its reverse (2413210011), we get a palindrome (3513333153).

It can be divided in two parts, 11001 and 23142, that added together give a palindrome (34143).

The spelling of 1100123142 in words is "one billion, one hundred million, one hundred twenty-three thousand, one hundred forty-two".