145214039 has 2 divisors, whose sum is σ = 145214040. Its totient is φ = 145214038.

The previous prime is 145213997. The next prime is 145214101. The reversal of 145214039 is 930412541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145214039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145264039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72607019 + 72607020.

It is an arithmetic number, because the mean of its divisors is an integer number (72607020).

Almost surely, 2^145214039 is an apocalyptic number.

145214039 is a deficient number, since it is larger than the sum of its proper divisors (1).

145214039 is an equidigital number, since it uses as much as digits as its factorization.

145214039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 145214039 is about 12050.4787871686. The cubic root of 145214039 is about 525.6171596305.

The spelling of 145214039 in words is "one hundred forty-five million, two hundred fourteen thousand, thirty-nine".