10402142011 has 4 divisors (see below), whose sum is σ = 10421159272. Its totient is φ = 10383124752.

The previous prime is 10402141991. The next prime is 10402142033. The reversal of 10402142011 is 11024120401.

It is a happy number.

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-10402142011 is a prime.

It is a super-2 number, since 2×10402142011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10402122011) 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, 9507810 + ... + 9508903.

It is an arithmetic number, because the mean of its divisors is an integer number (2605289818).

Almost surely, 2^10402142011 is an apocalyptic number.

10402142011 is a deficient number, since it is larger than the sum of its proper divisors (19017261).

10402142011 is an equidigital number, since it uses as much as digits as its factorization.

10402142011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19017260.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10402142011 its reverse (11024120401), we get a palindrome (21426262412).

The spelling of 10402142011 in words is "ten billion, four hundred two million, one hundred forty-two thousand, eleven".