142403441 has 8 divisors (see below), whose sum is σ = 150914664. Its totient is φ = 133907200.

The previous prime is 142403431. The next prime is 142403447. The reversal of 142403441 is 144304241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 93683041 + 48720400 = 9679^2 + 6980^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142403441 - 2¹⁴ = 142387057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142403447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20291 + ... + 26391.

It is an arithmetic number, because the mean of its divisors is an integer number (18864333).

Almost surely, 2^142403441 is an apocalyptic number.

It is an amenable number.

142403441 is a deficient number, since it is larger than the sum of its proper divisors (8511223).

142403441 is a wasteful number, since it uses less digits than its factorization.

142403441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 142403441 is about 11933.2912894976. The cubic root of 142403441 is about 522.2039604113.

Adding to 142403441 its reverse (144304241), we get a palindrome (286707682).

The spelling of 142403441 in words is "one hundred forty-two million, four hundred three thousand, four hundred forty-one".