145290039 has 8 divisors (see below), whose sum is σ = 193914240. Its totient is φ = 96762936.

The previous prime is 145290023. The next prime is 145290059. The reversal of 145290039 is 930092541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145290039 - 2⁴ = 145290023 is a prime.

It is a super-2 number, since 2×145290039² = 42218390865243042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145289991 and 145290009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145290059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20707 + ... + 26820.

It is an arithmetic number, because the mean of its divisors is an integer number (24239280).

Almost surely, 2^145290039 is an apocalyptic number.

145290039 is a deficient number, since it is larger than the sum of its proper divisors (48624201).

145290039 is a wasteful number, since it uses less digits than its factorization.

145290039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48549.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 145290039 is about 12053.6317763569. The cubic root of 145290039 is about 525.7088402455.

The spelling of 145290039 in words is "one hundred forty-five million, two hundred ninety thousand, thirty-nine".