421040155320242 has 8 divisors (see below), whose sum is σ = 631902171390336. Its totient is φ = 210406098190132.

The previous prime is 421040155320203. The next prime is 421040155320247. The reversal of 421040155320242 is 242023551040124.

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

It is not an unprimeable number, because it can be changed into a prime (421040155320247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56989730378 + ... + 56989737765.

It is an arithmetic number, because the mean of its divisors is an integer number (78987771423792).

Almost surely, 2^{421040155320242} is an apocalyptic number.

421040155320242 is a deficient number, since it is larger than the sum of its proper divisors (210862016070094).

421040155320242 is a wasteful number, since it uses less digits than its factorization.

421040155320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113979469992.

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 421040155320242 in words is "four hundred twenty-one trillion, forty billion, one hundred fifty-five million, three hundred twenty thousand, two hundred forty-two".