140019550 has 48 divisors (see below), whose sum is σ = 299088000. Its totient is φ = 48232800.

The previous prime is 140019541. The next prime is 140019553. The reversal of 140019550 is 55910041.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140019553) 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 23 ways as a sum of consecutive naturals, for example, 3751 + ... + 17149.

It is an arithmetic number, because the mean of its divisors is an integer number (6231000).

Almost surely, 2^140019550 is an apocalyptic number.

140019550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140019550 is an abundant number, since it is smaller than the sum of its proper divisors (159068450).

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

140019550 is a wasteful number, since it uses less digits than its factorization.

140019550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13441 (or 13436 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 140019550 is about 11832.9856756442. The cubic root of 140019550 is about 519.2735788839.

Adding to 140019550 its reverse (55910041), we get a palindrome (195929591).

The spelling of 140019550 in words is "one hundred forty million, nineteen thousand, five hundred fifty".