841220042 has 16 divisors (see below), whose sum is σ = 1392039432. Its totient is φ = 378785280.

The previous prime is 841220021. The next prime is 841220063. The reversal of 841220042 is 240022148.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (841220021) and next prime (841220063).

It can be written as a sum of positive squares in 4 ways, for example, as 100781521 + 740438521 = 10039^2 + 27211^2 .

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, 393503 + ... + 395634.

Almost surely, 2^841220042 is an apocalyptic number.

841220042 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

841220042 is a deficient number, since it is larger than the sum of its proper divisors (550819390).

841220042 is a wasteful number, since it uses less digits than its factorization.

841220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789193.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 841220042 is about 29003.7935794613. The cubic root of 841220042 is about 943.9953833981.

The spelling of 841220042 in words is "eight hundred forty-one million, two hundred twenty thousand, forty-two".