11500142 has 4 divisors (see below), whose sum is σ = 17250216. Its totient is φ = 5750070.

The previous prime is 11500141. The next prime is 11500157. The reversal of 11500142 is 24100511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24100511 = 43 ⋅560477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11500141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2875034 + ... + 2875037.

It is an arithmetic number, because the mean of its divisors is an integer number (4312554).

Almost surely, 2^11500142 is an apocalyptic number.

11500142 is a deficient number, since it is larger than the sum of its proper divisors (5750074).

11500142 is an equidigital number, since it uses as much as digits as its factorization.

11500142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5750073.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 11500142 is about 3391.1859282558. The cubic root of 11500142 is about 225.7188008116.

Adding to 11500142 its reverse (24100511), we get a palindrome (35600653).

The spelling of 11500142 in words is "eleven million, five hundred thousand, one hundred forty-two".