402125011 has 4 divisors (see below), whose sum is σ = 402238224. Its totient is φ = 402011800.

The previous prime is 402124999. The next prime is 402125023. The reversal of 402125011 is 110521204.

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 (402124999) and next prime (402125023).

It is a cyclic number.

It is not a de Polignac number, because 402125011 - 2⁷ = 402124883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402125411) 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, 51100 + ... + 58441.

It is an arithmetic number, because the mean of its divisors is an integer number (100559556).

Almost surely, 2^402125011 is an apocalyptic number.

402125011 is a deficient number, since it is larger than the sum of its proper divisors (113213).

402125011 is a wasteful number, since it uses less digits than its factorization.

402125011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113212.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 402125011 is about 20053.0549044279. The cubic root of 402125011 is about 738.1087638947.

Adding to 402125011 its reverse (110521204), we get a palindrome (512646215).

The spelling of 402125011 in words is "four hundred two million, one hundred twenty-five thousand, eleven".