442140125155451 has 16 divisors (see below), whose sum is σ = 477007499574144. Its totient is φ = 408257959409664.

The previous prime is 442140125155447. The next prime is 442140125155483. The reversal of 442140125155451 is 154551521041244.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 442140125155451 - 2² = 442140125155447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442140125155411) 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, 3010286 + ... + 29888828.

It is an arithmetic number, because the mean of its divisors is an integer number (29812968723384).

Almost surely, 2^{442140125155451} is an apocalyptic number.

442140125155451 is a deficient number, since it is larger than the sum of its proper divisors (34867374418693).

442140125155451 is a wasteful number, since it uses less digits than its factorization.

442140125155451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26896870.

The product of its (nonzero) digits is 640000, while the sum is 44.

Adding to 442140125155451 its reverse (154551521041244), we get a palindrome (596691646196695).

The spelling of 442140125155451 in words is "four hundred forty-two trillion, one hundred forty billion, one hundred twenty-five million, one hundred fifty-five thousand, four hundred fifty-one".