12151542 has 32 divisors (see below), whose sum is σ = 26788608. Its totient is φ = 3650976.

The previous prime is 12151523. The next prime is 12151553. The reversal of 12151542 is 24515121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1543 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (837144).

Almost surely, 2^12151542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12151542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13394304).

12151542 is an abundant number, since it is smaller than the sum of its proper divisors (14637066).

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

12151542 is a wasteful number, since it uses less digits than its factorization.

12151542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684.

The product of its digits is 400, while the sum is 21.

The square root of 12151542 is about 3485.9061949513. The cubic root of 12151542 is about 229.9025548140.

Adding to 12151542 its reverse (24515121), we get a palindrome (36666663).

The spelling of 12151542 in words is "twelve million, one hundred fifty-one thousand, five hundred forty-two".