15450142 has 4 divisors (see below), whose sum is σ = 23175216. Its totient is φ = 7725070.

The previous prime is 15450139. The next prime is 15450157. The reversal of 15450142 is 24105451.

15450142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3862534 + ... + 3862537.

It is an arithmetic number, because the mean of its divisors is an integer number (5793804).

Almost surely, 2^15450142 is an apocalyptic number.

15450142 is a deficient number, since it is larger than the sum of its proper divisors (7725074).

15450142 is an equidigital number, since it uses as much as digits as its factorization.

15450142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7725073.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 15450142 is about 3930.6668645409. Note that the first 3 decimals coincide. The cubic root of 15450142 is about 249.0639234171.

Adding to 15450142 its reverse (24105451), we get a palindrome (39555593).

The spelling of 15450142 in words is "fifteen million, four hundred fifty thousand, one hundred forty-two".