1202040051 has 4 divisors (see below), whose sum is σ = 1602720072. Its totient is φ = 801360032.

The previous prime is 1202040043. The next prime is 1202040061. The reversal of 1202040051 is 1500402021.

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

It is a cyclic number.

It is not a de Polignac number, because 1202040051 - 2³ = 1202040043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202040051.

It is not an unprimeable number, because it can be changed into a prime (1202040031) 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, 200340006 + ... + 200340011.

It is an arithmetic number, because the mean of its divisors is an integer number (400680018).

Almost surely, 2^1202040051 is an apocalyptic number.

1202040051 is a deficient number, since it is larger than the sum of its proper divisors (400680021).

1202040051 is an equidigital number, since it uses as much as digits as its factorization.

1202040051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400680020.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1202040051 is about 34670.4492471615. The cubic root of 1202040051 is about 1063.2604164995.

Adding to 1202040051 its reverse (1500402021), we get a palindrome (2702442072).

The spelling of 1202040051 in words is "one billion, two hundred two million, forty thousand, fifty-one".