42142035221 has 16 divisors (see below), whose sum is σ = 51106610688. Its totient is φ = 34223169600.

The previous prime is 42142035217. The next prime is 42142035239. The reversal of 42142035221 is 12253024124.

It is a cyclic number.

It is not a de Polignac number, because 42142035221 - 2² = 42142035217 is a prime.

It is a super-2 number, since 2×42142035221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42142032221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4748786 + ... + 4757651.

It is an arithmetic number, because the mean of its divisors is an integer number (3194163168).

Almost surely, 2^42142035221 is an apocalyptic number.

It is an amenable number.

42142035221 is a deficient number, since it is larger than the sum of its proper divisors (8964575467).

42142035221 is a wasteful number, since it uses less digits than its factorization.

42142035221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9506492.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 42142035221 its reverse (12253024124), we get a palindrome (54395059345).

The spelling of 42142035221 in words is "forty-two billion, one hundred forty-two million, thirty-five thousand, two hundred twenty-one".