402142445145 has 80 divisors (see below), whose sum is σ = 824000335488. Its totient is φ = 183805251840.

The previous prime is 402142445137. The next prime is 402142445189. The reversal of 402142445145 is 541544241204.

402142445145 is a `hidden beast` number, since 40 + 21 + 42 + 44 + 514 + 5 = 666.

It is not a de Polignac number, because 402142445145 - 2³ = 402142445137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28600957 + ... + 28615013.

Almost surely, 2^402142445145 is an apocalyptic number.

402142445145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402142445145 is an abundant number, since it is smaller than the sum of its proper divisors (421857890343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402142445145 is a wasteful number, since it uses less digits than its factorization.

402142445145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24172 (or 24163 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 402142445145 its reverse (541544241204), we get a palindrome (943686686349).

The spelling of 402142445145 in words is "four hundred two billion, one hundred forty-two million, four hundred forty-five thousand, one hundred forty-five".