145142439 has 24 divisors (see below), whose sum is σ = 214048512. Its totient is φ = 87403680.

The previous prime is 145142411. The next prime is 145142479. The reversal of 145142439 is 934241541.

145142439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145142439 - 2⁵ = 145142407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145142479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20784 + ... + 26874.

It is an arithmetic number, because the mean of its divisors is an integer number (8918688).

Almost surely, 2^145142439 is an apocalyptic number.

145142439 is a deficient number, since it is larger than the sum of its proper divisors (68906073).

145142439 is a wasteful number, since it uses less digits than its factorization.

145142439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167 (or 6154 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 145142439 is about 12047.5075845587. The cubic root of 145142439 is about 525.5307575720.

The spelling of 145142439 in words is "one hundred forty-five million, one hundred forty-two thousand, four hundred thirty-nine".