1545642 has 80 divisors (see below), whose sum is σ = 4181760. Its totient is φ = 417312.

The previous prime is 1545641. The next prime is 1545647. The reversal of 1545642 is 2465451.

1545642 is a `hidden beast` number, since 15 + 4 + 5 + 642 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1545641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32863 + ... + 32909.

It is an arithmetic number, because the mean of its divisors is an integer number (52272).

2^1545642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1545642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2090880).

1545642 is an abundant number, since it is smaller than the sum of its proper divisors (2636118).

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

1545642 is a wasteful number, since it uses less digits than its factorization.

1545642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 88 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1545642 is about 1243.2385129170. The cubic root of 1545642 is about 115.6208887752.

It can be divided in two parts, 1545 and 642, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1545642 in words is "one million, five hundred forty-five thousand, six hundred forty-two".