145912457 has 8 divisors (see below), whose sum is σ = 153833760. Its totient is φ = 138015360.

The previous prime is 145912433. The next prime is 145912463. The reversal of 145912457 is 754219541.

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 145912457 - 2¹² = 145908361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145912457.

It is not an unprimeable number, because it can be changed into a prime (145912477) 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, 7082 + ... + 18492.

It is an arithmetic number, because the mean of its divisors is an integer number (19229220).

Almost surely, 2^145912457 is an apocalyptic number.

It is an amenable number.

145912457 is a deficient number, since it is larger than the sum of its proper divisors (7921303).

145912457 is a wasteful number, since it uses less digits than its factorization.

145912457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12103.

The product of its digits is 50400, while the sum is 38.

The square root of 145912457 is about 12079.4228752867. The cubic root of 145912457 is about 526.4584775518.

The spelling of 145912457 in words is "one hundred forty-five million, nine hundred twelve thousand, four hundred fifty-seven".