140997078 has 32 divisors (see below), whose sum is σ = 318011520. Its totient is φ = 46296360.

The previous prime is 140997071. The next prime is 140997097. The reversal of 140997078 is 870799041.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140997071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15868 + ... + 23103.

It is an arithmetic number, because the mean of its divisors is an integer number (9937860).

Almost surely, 2^140997078 is an apocalyptic number.

140997078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

140997078 is an abundant number, since it is smaller than the sum of its proper divisors (177014442).

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

140997078 is a wasteful number, since it uses less digits than its factorization.

140997078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39049 (or 39043 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 140997078 is about 11874.2190480048. The cubic root of 140997078 is about 520.4791909229.

The spelling of 140997078 in words is "one hundred forty million, nine hundred ninety-seven thousand, seventy-eight".