840274343070 has 256 divisors, whose sum is σ = 2199071490048. Its totient is φ = 204868984320.

The previous prime is 840274343059. The next prime is 840274343081. The reversal of 840274343070 is 70343472048.

It is an interprime number because it is at equal distance from previous prime (840274343059) and next prime (840274343081).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 768777444 + ... + 768778536.

It is an arithmetic number, because the mean of its divisors is an integer number (8590123008).

Almost surely, 2^840274343070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840274343070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099535745024).

840274343070 is an abundant number, since it is smaller than the sum of its proper divisors (1358797146978).

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

840274343070 is a wasteful number, since it uses less digits than its factorization.

840274343070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 840274343070 in words is "eight hundred forty billion, two hundred seventy-four million, three hundred forty-three thousand, seventy".