145104749 has 2 divisors, whose sum is σ = 145104750. Its totient is φ = 145104748.

The previous prime is 145104737. The next prime is 145104763. The reversal of 145104749 is 947401541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135606025 + 9498724 = 11645^2 + 3082^2 .

It is a cyclic number.

It is not a de Polignac number, because 145104749 - 2¹² = 145100653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145104779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72552374 + 72552375.

It is an arithmetic number, because the mean of its divisors is an integer number (72552375).

Almost surely, 2^145104749 is an apocalyptic number.

It is an amenable number.

145104749 is a deficient number, since it is larger than the sum of its proper divisors (1).

145104749 is an equidigital number, since it uses as much as digits as its factorization.

145104749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 145104749 is about 12045.9432590395. The cubic root of 145104749 is about 525.4852644019.

The spelling of 145104749 in words is "one hundred forty-five million, one hundred four thousand, seven hundred forty-nine".