140015400 has 384 divisors, whose sum is σ = 549607680. Its totient is φ = 28753920.

The previous prime is 140015371. The next prime is 140015429. The reversal of 140015400 is 4510041.

It is an interprime number because it is at equal distance from previous prime (140015371) and next prime (140015429).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 140015400.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2641774 + ... + 2641826.

It is an arithmetic number, because the mean of its divisors is an integer number (1431270).

Almost surely, 2^140015400 is an apocalyptic number.

140015400 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 140015400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274803840).

140015400 is an abundant number, since it is smaller than the sum of its proper divisors (409592280).

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

140015400 is a wasteful number, since it uses less digits than its factorization.

140015400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 140015400 is about 11832.8103170802. The cubic root of 140015400 is about 519.2684486321.

Adding to 140015400 its reverse (4510041), we get a palindrome (144525441).

The spelling of 140015400 in words is "one hundred forty million, fifteen thousand, four hundred".