140537000 has 64 divisors (see below), whose sum is σ = 330642000. Its totient is φ = 55910400.

The previous prime is 140536937. The next prime is 140537009. The reversal of 140537000 is 735041.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1909924 + 138627076 = 1382^2 + 11774^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (140537009) 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, 312776 + ... + 313224.

Almost surely, 2^140537000 is an apocalyptic number.

140537000 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 140537000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165321000).

140537000 is an abundant number, since it is smaller than the sum of its proper divisors (190105000).

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

140537000 is a wasteful number, since it uses less digits than its factorization.

140537000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 140537000 is about 11854.8302391894. The cubic root of 140537000 is about 519.9124606092.

The spelling of 140537000 in words is "one hundred forty million, five hundred thirty-seven thousand".