2002555123 has 4 divisors (see below), whose sum is σ = 2007312208. Its totient is φ = 1997798040.

The previous prime is 2002555117. The next prime is 2002555129. The reversal of 2002555123 is 3215552002.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2002555117) and next prime (2002555129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002555123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002555129) 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, 2377911 + ... + 2378752.

It is an arithmetic number, because the mean of its divisors is an integer number (501828052).

Almost surely, 2^2002555123 is an apocalyptic number.

2002555123 is a deficient number, since it is larger than the sum of its proper divisors (4757085).

2002555123 is an equidigital number, since it uses as much as digits as its factorization.

2002555123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757084.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2002555123 is about 44749.9175753431. The cubic root of 2002555123 is about 1260.4573637771.

The spelling of 2002555123 in words is "two billion, two million, five hundred fifty-five thousand, one hundred twenty-three".