15142281 has 16 divisors (see below), whose sum is σ = 25171968. Its totient is φ = 7866000.

The previous prime is 15142277. The next prime is 15142307. The reversal of 15142281 is 18224151.

15142281 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15142281 - 2² = 15142277 is a prime.

It is a super-2 number, since 2×15142281² = 458577347765922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15142381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32545 + ... + 33006.

It is an arithmetic number, because the mean of its divisors is an integer number (1573248).

Almost surely, 2^15142281 is an apocalyptic number.

15142281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15142281 is a deficient number, since it is larger than the sum of its proper divisors (10029687).

15142281 is a wasteful number, since it uses less digits than its factorization.

15142281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65572.

The product of its digits is 640, while the sum is 24.

The square root of 15142281 is about 3891.3083917880. The cubic root of 15142281 is about 247.3985218102.

The spelling of 15142281 in words is "fifteen million, one hundred forty-two thousand, two hundred eighty-one".