1542321 has 24 divisors (see below), whose sum is σ = 2524704. Its totient is φ = 933120.

The previous prime is 1542283. The next prime is 1542347. The reversal of 1542321 is 1232451.

It is not a de Polignac number, because 1542321 - 2⁷ = 1542193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1542294 and 1542303.

It is not an unprimeable number, because it can be changed into a prime (1542361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2385 + ... + 2961.

It is an arithmetic number, because the mean of its divisors is an integer number (105196).

2^1542321 is an apocalyptic number.

1542321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1542321 is a deficient number, since it is larger than the sum of its proper divisors (982383).

1542321 is an equidigital number, since it uses as much as digits as its factorization.

1542321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 591 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1542321 is about 1241.9021700601. The cubic root of 1542321 is about 115.5380208779.

Adding to 1542321 its reverse (1232451), we get a palindrome (2774772).

The spelling of 1542321 in words is "one million, five hundred forty-two thousand, three hundred twenty-one".