145242464 has 48 divisors (see below), whose sum is σ = 298637136. Its totient is φ = 69465600.

The previous prime is 145242443. The next prime is 145242491. The reversal of 145242464 is 464242541.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 145242464.

It is a congruent number.

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, 71219 + ... + 73229.

It is an arithmetic number, because the mean of its divisors is an integer number (6221607).

Almost surely, 2^145242464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145242464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149318568).

145242464 is an abundant number, since it is smaller than the sum of its proper divisors (153394672).

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

145242464 is a wasteful number, since it uses less digits than its factorization.

145242464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2111 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

The square root of 145242464 is about 12051.6581431768. The cubic root of 145242464 is about 525.6514531307.

The spelling of 145242464 in words is "one hundred forty-five million, two hundred forty-two thousand, four hundred sixty-four".