42420501155 has 8 divisors (see below), whose sum is σ = 51767391600. Its totient is φ = 33361207456.

The previous prime is 42420501113. The next prime is 42420501247. The reversal of 42420501155 is 55110502424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42420501155 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71898860 + ... + 71899449.

It is an arithmetic number, because the mean of its divisors is an integer number (6470923950).

Almost surely, 2^42420501155 is an apocalyptic number.

42420501155 is a deficient number, since it is larger than the sum of its proper divisors (9346890445).

42420501155 is a wasteful number, since it uses less digits than its factorization.

42420501155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143798373.

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 42420501155 in words is "forty-two billion, four hundred twenty million, five hundred one thousand, one hundred fifty-five".