442020351 has 16 divisors (see below), whose sum is σ = 640394240. Its totient is φ = 270164160.

The previous prime is 442020347. The next prime is 442020353. The reversal of 442020351 is 153020244.

It is not a de Polignac number, because 442020351 - 2² = 442020347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442020353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123310 + ... + 126843.

It is an arithmetic number, because the mean of its divisors is an integer number (40024640).

Almost surely, 2^442020351 is an apocalyptic number.

442020351 is a deficient number, since it is larger than the sum of its proper divisors (198373889).

442020351 is a wasteful number, since it uses less digits than its factorization.

442020351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250206.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 442020351 is about 21024.2800352355. The cubic root of 442020351 is about 761.7528510759.

Adding to 442020351 its reverse (153020244), we get a palindrome (595040595).

The spelling of 442020351 in words is "four hundred forty-two million, twenty thousand, three hundred fifty-one".