145706449 has 12 divisors (see below), whose sum is σ = 176865984. Its totient is φ = 119460264.

The previous prime is 145706447. The next prime is 145706549. The reversal of 145706449 is 944607541.

It is not a de Polignac number, because 145706449 - 2¹ = 145706447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145706443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63517 + ... + 65770.

It is an arithmetic number, because the mean of its divisors is an integer number (14738832).

Almost surely, 2^145706449 is an apocalyptic number.

It is an amenable number.

145706449 is a deficient number, since it is larger than the sum of its proper divisors (31159535).

145706449 is a wasteful number, since it uses less digits than its factorization.

145706449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129324 (or 129317 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 145706449 is about 12070.8926347640. The cubic root of 145706449 is about 526.2105989236.

The spelling of 145706449 in words is "one hundred forty-five million, seven hundred six thousand, four hundred forty-nine".