151420542642 has 64 divisors (see below), whose sum is σ = 351913973760. Its totient is φ = 48169856592.

The previous prime is 151420542641. The next prime is 151420542649. The reversal of 151420542642 is 246245024151.

151420542642 is a `hidden beast` number, since 1 + 5 + 1 + 4 + 2 + 0 + 5 + 4 + 2 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 151420542597 and 151420542606.

It is not an unprimeable number, because it can be changed into a prime (151420542641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412603 + ... + 687809.

It is an arithmetic number, because the mean of its divisors is an integer number (5498655840).

Almost surely, 2^151420542642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151420542642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175956986880).

151420542642 is an abundant number, since it is smaller than the sum of its proper divisors (200493431118).

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

151420542642 is a wasteful number, since it uses less digits than its factorization.

151420542642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275684 (or 275678 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 151420542642 its reverse (246245024151), we get a palindrome (397665566793).

The spelling of 151420542642 in words is "one hundred fifty-one billion, four hundred twenty million, five hundred forty-two thousand, six hundred forty-two".