140773421 has 8 divisors (see below), whose sum is σ = 143466264. Its totient is φ = 138093120.

The previous prime is 140773417. The next prime is 140773427. The reversal of 140773421 is 124377041.

It can be written as a sum of positive squares in 4 ways, for example, as 10562500 + 130210921 = 3250^2 + 11411^2 .

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 140773421 - 2² = 140773417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140773427) 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, 21311 + ... + 27123.

It is an arithmetic number, because the mean of its divisors is an integer number (17933283).

Almost surely, 2^140773421 is an apocalyptic number.

It is an amenable number.

140773421 is a deficient number, since it is larger than the sum of its proper divisors (2692843).

140773421 is an equidigital number, since it uses as much as digits as its factorization.

140773421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6271.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 140773421 is about 11864.7975541094. The cubic root of 140773421 is about 520.2038414342.

The spelling of 140773421 in words is "one hundred forty million, seven hundred seventy-three thousand, four hundred twenty-one".