140261836 has 48 divisors (see below), whose sum is σ = 289578240. Its totient is φ = 58605120.

The previous prime is 140261827. The next prime is 140261837. The reversal of 140261836 is 638162041.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 140261798 and 140261807.

It is not an unprimeable number, because it can be changed into a prime (140261837) 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 15 ways as a sum of consecutive naturals, for example, 216465 + ... + 217111.

It is an arithmetic number, because the mean of its divisors is an integer number (6032880).

Almost surely, 2^140261836 is an apocalyptic number.

It is an amenable number.

140261836 is an abundant number, since it is smaller than the sum of its proper divisors (149316404).

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

140261836 is a wasteful number, since it uses less digits than its factorization.

140261836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 140261836 is about 11843.2189880961. The cubic root of 140261836 is about 519.5729185603.

The spelling of 140261836 in words is "one hundred forty million, two hundred sixty-one thousand, eight hundred thirty-six".