42120202442 has 8 divisors (see below), whose sum is σ = 64216046532. Its totient is φ = 20714853600.

The previous prime is 42120202429. The next prime is 42120202469. The reversal of 42120202442 is 24420202124.

42120202442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42107450401 + 12752041 = 205201^2 + 3571^2 .

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

It is a super-2 number, since 2×42120202442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172623659 + ... + 172623902.

Almost surely, 2^42120202442 is an apocalyptic number.

42120202442 is a deficient number, since it is larger than the sum of its proper divisors (22095844090).

42120202442 is a wasteful number, since it uses less digits than its factorization.

42120202442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345247624.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 42120202442 its reverse (24420202124), we get a palindrome (66540404566).

The spelling of 42120202442 in words is "forty-two billion, one hundred twenty million, two hundred two thousand, four hundred forty-two".