42151031421 has 16 divisors (see below), whose sum is σ = 58033218048. Its totient is φ = 27185356800.

The previous prime is 42151031407. The next prime is 42151031423. The reversal of 42151031421 is 12413015124.

It is not a de Polignac number, because 42151031421 - 2¹⁴ = 42151015037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42151031391 and 42151031400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42151031423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219501 + ... + 363981.

It is an arithmetic number, because the mean of its divisors is an integer number (3627076128).

Almost surely, 2^42151031421 is an apocalyptic number.

It is an amenable number.

42151031421 is a deficient number, since it is larger than the sum of its proper divisors (15882186627).

42151031421 is a wasteful number, since it uses less digits than its factorization.

42151031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147652.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 42151031421 its reverse (12413015124), we get a palindrome (54564046545).

The spelling of 42151031421 in words is "forty-two billion, one hundred fifty-one million, thirty-one thousand, four hundred twenty-one".