145810442 has 4 divisors (see below), whose sum is σ = 218715666. Its totient is φ = 72905220.

The previous prime is 145810439. The next prime is 145810459. The reversal of 145810442 is 244018541.

145810442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88943761 + 56866681 = 9431^2 + 7541^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36452609 + ... + 36452612.

Almost surely, 2^145810442 is an apocalyptic number.

145810442 is a deficient number, since it is larger than the sum of its proper divisors (72905224).

145810442 is an equidigital number, since it uses as much as digits as its factorization.

145810442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72905223.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 145810442 is about 12075.1994600503. The cubic root of 145810442 is about 526.3357574315.

Adding to 145810442 its reverse (244018541), we get a palindrome (389828983).

The spelling of 145810442 in words is "one hundred forty-five million, eight hundred ten thousand, four hundred forty-two".