1142906 has 4 divisors (see below), whose sum is σ = 1714362. Its totient is φ = 571452.

The previous prime is 1142891. The next prime is 1142909. The reversal of 1142906 is 6092411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6092411 = 13 ⋅468647.

It can be written as a sum of positive squares in only one way, i.e., 990025 + 152881 = 995^2 + 391^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1142909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285725 + ... + 285728.

2^1142906 is an apocalyptic number.

1142906 is a deficient number, since it is larger than the sum of its proper divisors (571456).

1142906 is an equidigital number, since it uses as much as digits as its factorization.

1142906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571455.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1142906 is about 1069.0678182417. The cubic root of 1142906 is about 104.5530815539.

It can be divided in two parts, 1142 and 906, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1142906 in words is "one million, one hundred forty-two thousand, nine hundred six".