1142641 has 4 divisors (see below), whose sum is σ = 1202800. Its totient is φ = 1082484.

The previous prime is 1142633. The next prime is 1142651. The reversal of 1142641 is 1462411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1142641 - 2³ = 1142633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 60139 = 1142641 / (1 + 1 + 4 + 2 + 6 + 4 + 1).

It is an Ulam number.

It is a Duffinian number.

1142641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1142651) 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, 30051 + ... + 30088.

It is an arithmetic number, because the mean of its divisors is an integer number (300700).

2^1142641 is an apocalyptic number.

It is an amenable number.

1142641 is a deficient number, since it is larger than the sum of its proper divisors (60159).

1142641 is an equidigital number, since it uses as much as digits as its factorization.

1142641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60158.

The product of its digits is 192, while the sum is 19.

The square root of 1142641 is about 1068.9438713048. The cubic root of 1142641 is about 104.5450001928.

The spelling of 1142641 in words is "one million, one hundred forty-two thousand, six hundred forty-one".