1551342 has 16 divisors (see below), whose sum is σ = 3341520. Its totient is φ = 477312.

The previous prime is 1551289. The next prime is 1551343. The reversal of 1551342 is 2431551.

1551342 is nontrivially palindromic in base 12.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551343) 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, 9867 + ... + 10022.

It is an arithmetic number, because the mean of its divisors is an integer number (208845).

2^1551342 is an apocalyptic number.

1551342 is an abundant number, since it is smaller than the sum of its proper divisors (1790178).

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

1551342 is a wasteful number, since it uses less digits than its factorization.

1551342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19907.

The product of its digits is 600, while the sum is 21.

The square root of 1551342 is about 1245.5288033602. The cubic root of 1551342 is about 115.7628428606.

Adding to 1551342 its reverse (2431551), we get a palindrome (3982893).

The spelling of 1551342 in words is "one million, five hundred fifty-one thousand, three hundred forty-two".