140320554 has 48 divisors (see below), whose sum is σ = 309917664. Its totient is φ = 42322720.

The previous prime is 140320517. The next prime is 140320571. The reversal of 140320554 is 455023041.

140320554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 251644 + ... + 252200.

It is an arithmetic number, because the mean of its divisors is an integer number (6456618).

Almost surely, 2^140320554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140320554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154958832).

140320554 is an abundant number, since it is smaller than the sum of its proper divisors (169597110).

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

140320554 is a wasteful number, since it uses less digits than its factorization.

140320554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 140320554 is about 11845.6977000091. The cubic root of 140320554 is about 519.6454116139.

Adding to 140320554 its reverse (455023041), we get a palindrome (595343595).

The spelling of 140320554 in words is "one hundred forty million, three hundred twenty thousand, five hundred fifty-four".