40142801 has 4 divisors (see below), whose sum is σ = 42255600. Its totient is φ = 38030004.

The previous prime is 40142789. The next prime is 40142803. The reversal of 40142801 is 10824104.

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 40142801 - 2¹⁴ = 40126417 is a prime.

It is a super-2 number, since 2×40142801² = 3222888944251202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40142803) 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, 1056371 + ... + 1056408.

It is an arithmetic number, because the mean of its divisors is an integer number (10563900).

Almost surely, 2^40142801 is an apocalyptic number.

It is an amenable number.

40142801 is a deficient number, since it is larger than the sum of its proper divisors (2112799).

40142801 is a wasteful number, since it uses less digits than its factorization.

40142801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112798.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 40142801 is about 6335.8346727168. The cubic root of 40142801 is about 342.4016831127.

Adding to 40142801 its reverse (10824104), we get a palindrome (50966905).

The spelling of 40142801 in words is "forty million, one hundred forty-two thousand, eight hundred one".