42120051351 has 8 divisors (see below), whose sum is σ = 64182935424. Its totient is φ = 24068600760.

The previous prime is 42120051341. The next prime is 42120051359. The reversal of 42120051351 is 15315002124.

It is a happy number.

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

It is not a de Polignac number, because 42120051351 - 2¹³ = 42120043159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42120051359) 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, 1002858345 + ... + 1002858386.

It is an arithmetic number, because the mean of its divisors is an integer number (8022866928).

Almost surely, 2^42120051351 is an apocalyptic number.

42120051351 is a deficient number, since it is larger than the sum of its proper divisors (22062884073).

42120051351 is a wasteful number, since it uses less digits than its factorization.

42120051351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005716741.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 42120051351 its reverse (15315002124), we get a palindrome (57435053475).

The spelling of 42120051351 in words is "forty-two billion, one hundred twenty million, fifty-one thousand, three hundred fifty-one".