145249746 has 16 divisors (see below), whose sum is σ = 290694144. Its totient is φ = 48384144.

The previous prime is 145249739. The next prime is 145249763. The reversal of 145249746 is 647942541.

It is a junction number, because it is equal to n+sod(n) for n = 145249698 and 145249707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700 + ... + 17256.

It is an arithmetic number, because the mean of its divisors is an integer number (18168384).

Almost surely, 2^145249746 is an apocalyptic number.

145249746 is an abundant number, since it is smaller than the sum of its proper divisors (145444398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145249746 is a wasteful number, since it uses less digits than its factorization.

145249746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16225.

The product of its digits is 241920, while the sum is 42.

The square root of 145249746 is about 12051.9602554937. The cubic root of 145249746 is about 525.6602378203.

The spelling of 145249746 in words is "one hundred forty-five million, two hundred forty-nine thousand, seven hundred forty-six".