402142443123 has 16 divisors (see below), whose sum is σ = 550700800160. Its totient is φ = 260840030976.

The previous prime is 402142443107. The next prime is 402142443137. The reversal of 402142443123 is 321344241204.

It is not a de Polignac number, because 402142443123 - 2⁴ = 402142443107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402142443223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4799061 + ... + 4882137.

It is an arithmetic number, because the mean of its divisors is an integer number (34418800010).

Almost surely, 2^402142443123 is an apocalyptic number.

402142443123 is a deficient number, since it is larger than the sum of its proper divisors (148558357037).

402142443123 is a wasteful number, since it uses less digits than its factorization.

402142443123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126726.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 402142443123 its reverse (321344241204), we get a palindrome (723486684327).

The spelling of 402142443123 in words is "four hundred two billion, one hundred forty-two million, four hundred forty-three thousand, one hundred twenty-three".