1542231 has 12 divisors (see below), whose sum is σ = 2238600. Its totient is φ = 1023120.

The previous prime is 1542221. The next prime is 1542239. The reversal of 1542231 is 1322451.

It is not a de Polignac number, because 1542231 - 2¹⁵ = 1509463 is a prime.

It is a super-2 number, since 2×1542231² = 4756952914722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542239) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2896 + ... + 3386.

It is an arithmetic number, because the mean of its divisors is an integer number (186550).

2^1542231 is an apocalyptic number.

1542231 is a deficient number, since it is larger than the sum of its proper divisors (696369).

1542231 is a wasteful number, since it uses less digits than its factorization.

1542231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 843 counting only the distinct ones).

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

The square root of 1542231 is about 1241.8659347933. The cubic root of 1542231 is about 115.5357734806.

Adding to 1542231 its reverse (1322451), we get a palindrome (2864682).

The spelling of 1542231 in words is "one million, five hundred forty-two thousand, two hundred thirty-one".