40521242000 has 40 divisors (see below), whose sum is σ = 97980367992. Its totient is φ = 16208496000.

The previous prime is 40521241997. The next prime is 40521242017. The reversal of 40521242000 is 24212504.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1315657984 + 39205584016 = 36272^2 + 198004^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10128311 + ... + 10132310.

Almost surely, 2^40521242000 is an apocalyptic number.

40521242000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40521242000 is an abundant number, since it is smaller than the sum of its proper divisors (57459125992).

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

40521242000 is a wasteful number, since it uses less digits than its factorization.

40521242000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20260644 (or 20260628 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 40521242000 its reverse (24212504), we get a palindrome (40545454504).

The spelling of 40521242000 in words is "forty billion, five hundred twenty-one million, two hundred forty-two thousand".