1151002123 has 4 divisors (see below), whose sum is σ = 1154319480. Its totient is φ = 1147684768.

The previous prime is 1151002117. The next prime is 1151002183. The reversal of 1151002123 is 3212001511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1151002123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1151002097 and 1151002106.

It is not an unprimeable number, because it can be changed into a prime (1151002183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1658158 + ... + 1658851.

It is an arithmetic number, because the mean of its divisors is an integer number (288579870).

Almost surely, 2^1151002123 is an apocalyptic number.

1151002123 is a deficient number, since it is larger than the sum of its proper divisors (3317357).

1151002123 is an equidigital number, since it uses as much as digits as its factorization.

1151002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317356.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1151002123 is about 33926.4221956869. The cubic root of 1151002123 is about 1047.9937876577.

Adding to 1151002123 its reverse (3212001511), we get a palindrome (4363003634).

The spelling of 1151002123 in words is "one billion, one hundred fifty-one million, two thousand, one hundred twenty-three".