252090042340 has 24 divisors (see below), whose sum is σ = 560529624312. Its totient is φ = 94904486400.

The previous prime is 252090042299. The next prime is 252090042341. The reversal of 252090042340 is 43240090252.

It can be written as a sum of positive squares in 4 ways, for example, as 12295704996 + 239794337344 = 110886^2 + 489688^2 .

It is not an unprimeable number, because it can be changed into a prime (252090042341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370720311 + ... + 370720990.

It is an arithmetic number, because the mean of its divisors is an integer number (23355401013).

Almost surely, 2^252090042340 is an apocalyptic number.

252090042340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252090042340 is an abundant number, since it is smaller than the sum of its proper divisors (308439581972).

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

252090042340 is a wasteful number, since it uses less digits than its factorization.

252090042340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741441327 (or 741441325 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 252090042340 in words is "two hundred fifty-two billion, ninety million, forty-two thousand, three hundred forty".