140631040 has 132 divisors (see below), whose sum is σ = 372439368. Its totient is φ = 50913280.

The previous prime is 140631031. The next prime is 140631041. The reversal of 140631040 is 40136041.

It is a happy number.

It is a super-2 number, since 2×140631040² = 39554178822963200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140630999 and 140631017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140631041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619407 + ... + 619633.

Almost surely, 2^140631040 is an apocalyptic number.

140631040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140631040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186219684).

140631040 is an abundant number, since it is smaller than the sum of its proper divisors (231808328).

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

140631040 is a wasteful number, since it uses less digits than its factorization.

140631040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 140631040 is about 11858.7958916578. The cubic root of 140631040 is about 520.0284008157.

Adding to 140631040 its reverse (40136041), we get a palindrome (180767081).

The spelling of 140631040 in words is "one hundred forty million, six hundred thirty-one thousand, forty".