140421000 has 64 divisors (see below), whose sum is σ = 438122880. Its totient is φ = 37444800.

The previous prime is 140420993. The next prime is 140421053. The reversal of 140421000 is 124041.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20404 + ... + 26403.

It is an arithmetic number, because the mean of its divisors is an integer number (6845670).

Almost surely, 2^140421000 is an apocalyptic number.

140421000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140421000 is an abundant number, since it is smaller than the sum of its proper divisors (297701880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140421000 is a wasteful number, since it uses less digits than its factorization.

140421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46831 (or 46817 counting only the distinct ones).

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

The square root of 140421000 is about 11849.9367086917. The cubic root of 140421000 is about 519.7693750483.

Adding to 140421000 its reverse (124041), we get a palindrome (140545041).

The spelling of 140421000 in words is "one hundred forty million, four hundred twenty-one thousand".