142227401 has 4 divisors (see below), whose sum is σ = 145696404. Its totient is φ = 138758400.

The previous prime is 142227391. The next prime is 142227403. The reversal of 142227401 is 104722241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19571776 + 122655625 = 4424^2 + 11075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142227401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142227403) 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, 1734440 + ... + 1734521.

It is an arithmetic number, because the mean of its divisors is an integer number (36424101).

Almost surely, 2^142227401 is an apocalyptic number.

It is an amenable number.

142227401 is a deficient number, since it is larger than the sum of its proper divisors (3469003).

142227401 is an equidigital number, since it uses as much as digits as its factorization.

142227401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469002.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 142227401 is about 11925.9130048814. The cubic root of 142227401 is about 521.9886877757.

Adding to 142227401 its reverse (104722241), we get a palindrome (246949642).

The spelling of 142227401 in words is "one hundred forty-two million, two hundred twenty-seven thousand, four hundred one".