2151051142242 has 8 divisors (see below), whose sum is σ = 4302102284496. Its totient is φ = 717017047412.

The previous prime is 2151051142223. The next prime is 2151051142249. The reversal of 2151051142242 is 2422411501512.

It is a sphenic number, since it is the product of 3 distinct primes.

2151051142242 is an admirable number.

It is a super-2 number, since 2×2151051142242² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2151051142249) 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, 179254261848 + ... + 179254261859.

It is an arithmetic number, because the mean of its divisors is an integer number (537762785562).

Almost surely, 2^{2151051142242} is an apocalyptic number.

2151051142242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2151051142242 is a wasteful number, since it uses less digits than its factorization.

2151051142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358508523712.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 2151051142242 its reverse (2422411501512), we get a palindrome (4573462643754).

The spelling of 2151051142242 in words is "two trillion, one hundred fifty-one billion, fifty-one million, one hundred forty-two thousand, two hundred forty-two".