840540354332 has 48 divisors (see below), whose sum is σ = 1722464808960. Its totient is φ = 351367459200.

The previous prime is 840540354299. The next prime is 840540354337. The reversal of 840540354332 is 233453045048.

It is a happy number.

It is a super-2 number, since 2×840540354332² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 840540354332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840540354337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5246657 + ... + 5404487.

It is an arithmetic number, because the mean of its divisors is an integer number (35884683520).

Almost surely, 2^840540354332 is an apocalyptic number.

840540354332 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

840540354332 is an abundant number, since it is smaller than the sum of its proper divisors (881924454628).

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

840540354332 is a wasteful number, since it uses less digits than its factorization.

840540354332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162522 (or 162520 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 840540354332 in words is "eight hundred forty billion, five hundred forty million, three hundred fifty-four thousand, three hundred thirty-two".