1531442 has 16 divisors (see below), whose sum is σ = 2528064. Its totient is φ = 690000.

The previous prime is 1531379. The next prime is 1531447. The reversal of 1531442 is 2441351.

It is not an unprimeable number, because it can be changed into a prime (1531447) 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, 3092 + ... + 3552.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

2^1531442 is an apocalyptic number.

1531442 is a deficient number, since it is larger than the sum of its proper divisors (996622).

1531442 is a wasteful number, since it uses less digits than its factorization.

1531442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625.

The product of its digits is 480, while the sum is 20.

The square root of 1531442 is about 1237.5144443601. The cubic root of 1531442 is about 115.2657245356.

Adding to 1531442 its reverse (2441351), we get a palindrome (3972793).

Subtracting 1531442 from its reverse (2441351), we obtain a palindrome (909909).

The spelling of 1531442 in words is "one million, five hundred thirty-one thousand, four hundred forty-two".