140401421 has 8 divisors (see below), whose sum is σ = 145336320. Its totient is φ = 135526608.

The previous prime is 140401403. The next prime is 140401423. The reversal of 140401421 is 124104041.

140401421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 140401421 - 2⁶ = 140401357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140401421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140401423) 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, 10241 + ... + 19638.

It is an arithmetic number, because the mean of its divisors is an integer number (18167040).

Almost surely, 2^140401421 is an apocalyptic number.

It is an amenable number.

140401421 is a deficient number, since it is larger than the sum of its proper divisors (4934899).

140401421 is a wasteful number, since it uses less digits than its factorization.

140401421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30043.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 140401421 is about 11849.1105573372. The cubic root of 140401421 is about 519.7452166541.

Adding to 140401421 its reverse (124104041), we get a palindrome (264505462).

The spelling of 140401421 in words is "one hundred forty million, four hundred one thousand, four hundred twenty-one".