145242234 has 20 divisors (see below), whose sum is σ = 325450554. Its totient is φ = 48414024.

The previous prime is 145242157. The next prime is 145242269. The reversal of 145242234 is 432242541.

It can be written as a sum of positive squares in only one way, i.e., 127577025 + 17665209 = 11295^2 + 4203^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 145242198 and 145242207.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 448117 + ... + 448440.

Almost surely, 2^145242234 is an apocalyptic number.

145242234 is an abundant number, since it is smaller than the sum of its proper divisors (180208320).

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

145242234 is an equidigital number, since it uses as much as digits as its factorization.

145242234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896571 (or 896562 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 145242234 is about 12051.6486009176. The cubic root of 145242234 is about 525.6511756638.

Adding to 145242234 its reverse (432242541), we get a palindrome (577484775).

The spelling of 145242234 in words is "one hundred forty-five million, two hundred forty-two thousand, two hundred thirty-four".