1542720 has 56 divisors (see below), whose sum is σ = 4901184. Its totient is φ = 411136.

The previous prime is 1542703. The next prime is 1542727. The reversal of 1542720 is 272451.

It is not an unprimeable number, because it can be changed into a prime (1542727) 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, 157 + ... + 1763.

2^1542720 is an apocalyptic number.

1542720 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 1542720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2450592).

1542720 is an abundant number, since it is smaller than the sum of its proper divisors (3358464).

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

1542720 is a wasteful number, since it uses less digits than its factorization.

1542720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1542720 is about 1242.0628003447. The cubic root of 1542720 is about 115.5479832864.

The spelling of 1542720 in words is "one million, five hundred forty-two thousand, seven hundred twenty".