1537542 has 20 divisors (see below), whose sum is σ = 3445596. Its totient is φ = 512460.

The previous prime is 1537517. The next prime is 1537559. The reversal of 1537542 is 2457351.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4584 + ... + 4907.

2^1537542 is an apocalyptic number.

1537542 is an abundant number, since it is smaller than the sum of its proper divisors (1908054).

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

1537542 is an equidigital number, since it uses as much as digits as its factorization.

1537542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9505 (or 9496 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 1537542 is about 1239.9766126827. The cubic root of 1537542 is about 115.4185629343.

The spelling of 1537542 in words is "one million, five hundred thirty-seven thousand, five hundred forty-two".