202401021040 has 40 divisors (see below), whose sum is σ = 470606897088. Its totient is φ = 80956189440.

The previous prime is 202401021013. The next prime is 202401021047. The reversal of 202401021040 is 40120104202.

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 (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202401021047) 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, 1810614 + ... + 1919146.

Almost surely, 2^202401021040 is an apocalyptic number.

202401021040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202401021040 is an abundant number, since it is smaller than the sum of its proper divisors (268205876048).

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

202401021040 is a wasteful number, since it uses less digits than its factorization.

202401021040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131857 (or 131851 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202401021040 its reverse (40120104202), we get a palindrome (242521125242).

The spelling of 202401021040 in words is "two hundred two billion, four hundred one million, twenty-one thousand, forty".