140421051 has 6 divisors (see below), whose sum is σ = 202830420. Its totient is φ = 93614028.

The previous prime is 140420993. The next prime is 140421053. The reversal of 140421051 is 150124041.

140421051 is a `hidden beast` number, since 1 + 404 + 210 + 51 = 666.

It is not a de Polignac number, because 140421051 - 2⁷ = 140420923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140421053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7801161 + ... + 7801178.

It is an arithmetic number, because the mean of its divisors is an integer number (33805070).

Almost surely, 2^140421051 is an apocalyptic number.

140421051 is a deficient number, since it is larger than the sum of its proper divisors (62409369).

140421051 is a wasteful number, since it uses less digits than its factorization.

140421051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15602345 (or 15602342 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 140421051 is about 11849.9388606018. The cubic root of 140421051 is about 519.7694379739.

Adding to 140421051 its reverse (150124041), we get a palindrome (290545092).

The spelling of 140421051 in words is "one hundred forty million, four hundred twenty-one thousand, fifty-one".