140421001 has 16 divisors (see below), whose sum is σ = 169344000. Its totient is φ = 113745168.

The previous prime is 140420993. The next prime is 140421053. The reversal of 140421001 is 100124041.

140421001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 140421001 - 2³ = 140420993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140421901) 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, 65850 + ... + 67948.

It is an arithmetic number, because the mean of its divisors is an integer number (10584000).

Almost surely, 2^140421001 is an apocalyptic number.

It is an amenable number.

140421001 is a deficient number, since it is larger than the sum of its proper divisors (28922999).

140421001 is a wasteful number, since it uses less digits than its factorization.

140421001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 140421001 is about 11849.9367508861. The cubic root of 140421001 is about 519.7693762821.

Adding to 140421001 its reverse (100124041), we get a palindrome (240545042).

The spelling of 140421001 in words is "one hundred forty million, four hundred twenty-one thousand, one".