145342720 has 72 divisors (see below), whose sum is σ = 350259840. Its totient is φ = 57784320.

The previous prime is 145342679. The next prime is 145342721. The reversal of 145342720 is 27243541.

It is a super-2 number, since 2×145342720² = 42249012513996800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145342721) 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, 346671 + ... + 347089.

It is an arithmetic number, because the mean of its divisors is an integer number (4864720).

Almost surely, 2^145342720 is an apocalyptic number.

145342720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145342720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175129920).

145342720 is an abundant number, since it is smaller than the sum of its proper divisors (204917120).

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

145342720 is an equidigital number, since it uses as much as digits as its factorization.

145342720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 145342720 is about 12055.8168532870. The cubic root of 145342720 is about 525.7723718337.

The spelling of 145342720 in words is "one hundred forty-five million, three hundred forty-two thousand, seven hundred twenty".