140402670408 has 1152 divisors, whose sum is σ = 560770560000. Its totient is φ = 31757806080.

The previous prime is 140402670407. The next prime is 140402670409. The reversal of 140402670408 is 804076204041.

140402670408 is a `hidden beast` number, since 140 + 40 + 2 + 6 + 70 + 408 = 666.

It is an interprime number because it is at equal distance from previous prime (140402670407) and next prime (140402670409).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (140402670403) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 587458753 + ... + 587458991.

It is an arithmetic number, because the mean of its divisors is an integer number (486780000).

Almost surely, 2^140402670408 is an apocalyptic number.

140402670408 is a gapful number since it is divisible by the number (18) 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 140402670408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280385280000).

140402670408 is an abundant number, since it is smaller than the sum of its proper divisors (420367889592).

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

140402670408 is a wasteful number, since it uses less digits than its factorization.

140402670408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

Adding to 140402670408 its reverse (804076204041), we get a palindrome (944478874449).

The spelling of 140402670408 in words is "one hundred forty billion, four hundred two million, six hundred seventy thousand, four hundred eight".