145239452 has 12 divisors (see below), whose sum is σ = 254298240. Its totient is φ = 72582816.

The previous prime is 145239431. The next prime is 145239461. The reversal of 145239452 is 254932541.

145239452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848 + ... + 17064.

It is an arithmetic number, because the mean of its divisors is an integer number (21191520).

Almost surely, 2^145239452 is an apocalyptic number.

It is an amenable number.

145239452 is a deficient number, since it is larger than the sum of its proper divisors (109058788).

145239452 is a wasteful number, since it uses less digits than its factorization.

145239452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18460 (or 18458 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 145239452 is about 12051.5331804713. The cubic root of 145239452 is about 525.6478194984.

It can be divided in two parts, 1452 and 39452, that added together give a palindrome (40904).

The spelling of 145239452 in words is "one hundred forty-five million, two hundred thirty-nine thousand, four hundred fifty-two".