140450400 has 108 divisors (see below), whose sum is σ = 495288612. Its totient is φ = 37451520.

The previous prime is 140450383. The next prime is 140450411. The reversal of 140450400 is 4054041.

Added to its reverse (4054041) it gives a square (144504441 = 12021²).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2554 + ... + 16953.

Almost surely, 2^140450400 is an apocalyptic number.

140450400 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 140450400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247644306).

140450400 is an abundant number, since it is smaller than the sum of its proper divisors (354838212).

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

140450400 is a wasteful number, since it uses less digits than its factorization.

140450400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19533 (or 19517 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 140450400 is about 11851.1771567216. The cubic root of 140450400 is about 519.8056472898.

Adding to 140450400 its reverse (4054041), we get a square (144504441 = 12021²).

The spelling of 140450400 in words is "one hundred forty million, four hundred fifty thousand, four hundred".