1051143 has 4 divisors (see below), whose sum is σ = 1401528. Its totient is φ = 700760.

The previous prime is 1051139. The next prime is 1051147. The reversal of 1051143 is 3411501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3411501 = 3 ⋅1137167.

It is an interprime number because it is at equal distance from previous prime (1051139) and next prime (1051147).

It is a cyclic number.

It is not a de Polignac number, because 1051143 - 2² = 1051139 is a prime.

It is a super-2 number, since 2×1051143² = 2209803212898, which contains 22 as substring.

It is a D-number.

1051143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175188 + ... + 175193.

It is an arithmetic number, because the mean of its divisors is an integer number (350382).

2^1051143 is an apocalyptic number.

1051143 is a deficient number, since it is larger than the sum of its proper divisors (350385).

1051143 is an equidigital number, since it uses as much as digits as its factorization.

1051143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350384.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1051143 is about 1025.2526517888. The cubic root of 1051143 is about 101.6765029750.

Adding to 1051143 its reverse (3411501), we get a palindrome (4462644).

The spelling of 1051143 in words is "one million, fifty-one thousand, one hundred forty-three".