140277640 has 32 divisors (see below), whose sum is σ = 326511000. Its totient is φ = 54175744.

The previous prime is 140277629. The next prime is 140277647. The reversal of 140277640 is 46772041.

It can be written as a sum of positive squares in 4 ways, for example, as 130279396 + 9998244 = 11414^2 + 3162^2 .

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (140277647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 59305 + ... + 61624.

Almost surely, 2^140277640 is an apocalyptic number.

140277640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140277640 is an abundant number, since it is smaller than the sum of its proper divisors (186233360).

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

140277640 is a wasteful number, since it uses less digits than its factorization.

140277640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120969 (or 120965 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 140277640 is about 11843.8861865521. The cubic root of 140277640 is about 519.5924321174.

The spelling of 140277640 in words is "one hundred forty million, two hundred seventy-seven thousand, six hundred forty".