1142251 has 4 divisors (see below), whose sum is σ = 1246104. Its totient is φ = 1038400.

The previous prime is 1142243. The next prime is 1142263. The reversal of 1142251 is 1522411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1522411 = 11 ⋅138401.

It is not a de Polignac number, because 1142251 - 2³ = 1142243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51910 + ... + 51931.

It is an arithmetic number, because the mean of its divisors is an integer number (311526).

2^1142251 is an apocalyptic number.

1142251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1142251 is a deficient number, since it is larger than the sum of its proper divisors (103853).

1142251 is a wasteful number, since it uses less digits than its factorization.

1142251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103852.

The product of its digits is 80, while the sum is 16.

The square root of 1142251 is about 1068.7614326874. The cubic root of 1142251 is about 104.5331045960.

Adding to 1142251 its reverse (1522411), we get a palindrome (2664662).

The spelling of 1142251 in words is "one million, one hundred forty-two thousand, two hundred fifty-one".