140421040 has 20 divisors (see below), whose sum is σ = 326479104. Its totient is φ = 56168384.

The previous prime is 140420993. The next prime is 140421053. The reversal of 140421040 is 40124041.

140421040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877552 + ... + 877711.

Almost surely, 2^140421040 is an apocalyptic number.

140421040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140421040 is an abundant number, since it is smaller than the sum of its proper divisors (186058064).

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

140421040 is a wasteful number, since it uses less digits than its factorization.

140421040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755276 (or 1755270 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140421040 is about 11849.9383964643. The cubic root of 140421040 is about 519.7694244017.

Adding to 140421040 its reverse (40124041), we get a palindrome (180545081).

The spelling of 140421040 in words is "one hundred forty million, four hundred twenty-one thousand, forty".