145900643 has 8 divisors (see below), whose sum is σ = 170291712. Its totient is φ = 122396616.

The previous prime is 145900627. The next prime is 145900691. The reversal of 145900643 is 346009541.

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

It is a cyclic number.

It is not a de Polignac number, because 145900643 - 2⁴ = 145900627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145900603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221405 + ... + 222062.

It is an arithmetic number, because the mean of its divisors is an integer number (21286464).

Almost surely, 2^145900643 is an apocalyptic number.

145900643 is a deficient number, since it is larger than the sum of its proper divisors (24391069).

145900643 is an equidigital number, since it uses as much as digits as its factorization.

145900643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443521.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 145900643 is about 12078.9338519590. The cubic root of 145900643 is about 526.4442686934. Note that the first 3 decimals are identical.

The spelling of 145900643 in words is "one hundred forty-five million, nine hundred thousand, six hundred forty-three".