442280146 has 32 divisors (see below), whose sum is σ = 835181568. Its totient is φ = 170637840.

The previous prime is 442280101. The next prime is 442280149. The reversal of 442280146 is 641082244.

It is a super-2 number, since 2×442280146² = 391223455091562632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442280149) 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, 1921 + ... + 29803.

It is an arithmetic number, because the mean of its divisors is an integer number (26099424).

Almost surely, 2^442280146 is an apocalyptic number.

442280146 is a deficient number, since it is larger than the sum of its proper divisors (392901422).

442280146 is a wasteful number, since it uses less digits than its factorization.

442280146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28006.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 442280146 is about 21030.4575794251. The cubic root of 442280146 is about 761.9020605129.

The spelling of 442280146 in words is "four hundred forty-two million, two hundred eighty thousand, one hundred forty-six".