140212736820 has 72 divisors (see below), whose sum is σ = 458028281256. Its totient is φ = 34513903872.

The previous prime is 140212736777. The next prime is 140212736893. The reversal of 140212736820 is 28637212041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27570609936 + 112642126884 = 166044^2 + 335622^2 .

It is a super-2 number, since 2×140212736820² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29957647 + ... + 29962326.

Almost surely, 2^140212736820 is an apocalyptic number.

140212736820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140212736820 is an abundant number, since it is smaller than the sum of its proper divisors (317815544436).

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

140212736820 is a wasteful number, since it uses less digits than its factorization.

140212736820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59920001 (or 59919996 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Adding to 140212736820 its reverse (28637212041), we get a palindrome (168849948861).

The spelling of 140212736820 in words is "one hundred forty billion, two hundred twelve million, seven hundred thirty-six thousand, eight hundred twenty".