442101402 has 40 divisors (see below), whose sum is σ = 991913472. Its totient is φ = 147177000.

The previous prime is 442101391. The next prime is 442101403. The reversal of 442101402 is 204101244.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (442101403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 185277 + ... + 187647.

Almost surely, 2^442101402 is an apocalyptic number.

442101402 is an abundant number, since it is smaller than the sum of its proper divisors (549812070).

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

442101402 is a wasteful number, since it uses less digits than its factorization.

442101402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 442101402 is about 21026.2075039699. The cubic root of 442101402 is about 761.7994077988.

Adding to 442101402 its reverse (204101244), we get a palindrome (646202646).

The spelling of 442101402 in words is "four hundred forty-two million, one hundred one thousand, four hundred two".