1542438 has 12 divisors (see below), whose sum is σ = 3341988. Its totient is φ = 514140.

The previous prime is 1542433. The next prime is 1542451. The reversal of 1542438 is 8342451.

It is a super-2 number, since 2×1542438² = 4758229967688, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42828 + ... + 42863.

It is an arithmetic number, because the mean of its divisors is an integer number (278499).

2^1542438 is an apocalyptic number.

1542438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1542438 is an abundant number, since it is smaller than the sum of its proper divisors (1799550).

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

1542438 is a wasteful number, since it uses less digits than its factorization.

1542438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85699 (or 85696 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1542438 is about 1241.9492743265. The cubic root of 1542438 is about 115.5409423637.

Adding to 1542438 its reverse (8342451), we get a palindrome (9884889).

The spelling of 1542438 in words is "one million, five hundred forty-two thousand, four hundred thirty-eight".