145742339 has 4 divisors (see below), whose sum is σ = 147795120. Its totient is φ = 143689560.

The previous prime is 145742321. The next prime is 145742341. The reversal of 145742339 is 933247541.

145742339 is digitally balanced in base 2, 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 is a cyclic number.

It is not a de Polignac number, because 145742339 - 2¹⁶ = 145676803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145741339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026284 + ... + 1026425.

It is an arithmetic number, because the mean of its divisors is an integer number (36948780).

Almost surely, 2^145742339 is an apocalyptic number.

145742339 is a deficient number, since it is larger than the sum of its proper divisors (2052781).

145742339 is an equidigital number, since it uses as much as digits as its factorization.

145742339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052780.

The product of its digits is 90720, while the sum is 38.

The square root of 145742339 is about 12072.3791772790. The cubic root of 145742339 is about 526.2538002784.

The spelling of 145742339 in words is "one hundred forty-five million, seven hundred forty-two thousand, three hundred thirty-nine".