242100042 has 16 divisors (see below), whose sum is σ = 486132192. Its totient is φ = 80378000.

The previous prime is 242100037. The next prime is 242100073. The reversal of 242100042 is 240001242.

It is a super-2 number, since 2×242100042² = 117224860672803528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242099994 and 242100030.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78873 + ... + 81884.

It is an arithmetic number, because the mean of its divisors is an integer number (30383262).

Almost surely, 2^242100042 is an apocalyptic number.

242100042 is an abundant number, since it is smaller than the sum of its proper divisors (244032150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242100042 is a wasteful number, since it uses less digits than its factorization.

242100042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161013.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 242100042 is about 15559.5643255202. The cubic root of 242100042 is about 623.2538284660.

Adding to 242100042 its reverse (240001242), we get a palindrome (482101284).

The spelling of 242100042 in words is "two hundred forty-two million, one hundred thousand, forty-two".