42133021251 has 8 divisors (see below), whose sum is σ = 56280064704. Its totient is φ = 28037329320.

The previous prime is 42133021223. The next prime is 42133021283. The reversal of 42133021251 is 15212033124.

42133021251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42133021251 - 2⁹ = 42133020739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42133022251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12835965 + ... + 12839246.

It is an arithmetic number, because the mean of its divisors is an integer number (7035008088).

Almost surely, 2^42133021251 is an apocalyptic number.

42133021251 is a deficient number, since it is larger than the sum of its proper divisors (14147043453).

42133021251 is a wasteful number, since it uses less digits than its factorization.

42133021251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25675761.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 42133021251 its reverse (15212033124), we get a palindrome (57345054375).

The spelling of 42133021251 in words is "forty-two billion, one hundred thirty-three million, twenty-one thousand, two hundred fifty-one".