142400001 has 16 divisors (see below), whose sum is σ = 193489920. Its totient is φ = 93139200.

The previous prime is 142399997. The next prime is 142400009. The reversal of 142400001 is 100004241.

It is not a de Polignac number, because 142400001 - 2² = 142399997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142400001.

It is not an unprimeable number, because it can be changed into a prime (142400009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32160 + ... + 36318.

It is an arithmetic number, because the mean of its divisors is an integer number (12093120).

Almost surely, 2^142400001 is an apocalyptic number.

It is an amenable number.

142400001 is a deficient number, since it is larger than the sum of its proper divisors (51089919).

142400001 is a wasteful number, since it uses less digits than its factorization.

142400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 142400001 is about 11933.1471540411. The cubic root of 142400001 is about 522.1997554659.

Adding to 142400001 its reverse (100004241), we get a palindrome (242404242).

The spelling of 142400001 in words is "one hundred forty-two million, four hundred thousand, one".