140778078 has 96 divisors (see below), whose sum is σ = 346705920. Its totient is φ = 37920960.

The previous prime is 140778059. The next prime is 140778083. The reversal of 140778078 is 870877041.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 736963 + ... + 737153.

It is an arithmetic number, because the mean of its divisors is an integer number (3611520).

Almost surely, 2^140778078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140778078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173352960).

140778078 is an abundant number, since it is smaller than the sum of its proper divisors (205927842).

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

140778078 is a wasteful number, since it uses less digits than its factorization.

140778078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 140778078 is about 11864.9938053081. The cubic root of 140778078 is about 520.2095777505.

It can be divided in two parts, 14077 and 8078, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 140778078 in words is "one hundred forty million, seven hundred seventy-eight thousand, seventy-eight".