402421301441240 has 16 divisors (see below), whose sum is σ = 905447928242880. Its totient is φ = 160968520576480.

The previous prime is 402421301441239. The next prime is 402421301441273. The reversal of 402421301441240 is 42144103124204.

It is a super-2 number, since 2×402421301441240² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402421301441197 and 402421301441206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030266267976 + ... + 5030266268055.

It is an arithmetic number, because the mean of its divisors is an integer number (56590495515180).

Almost surely, 2^{402421301441240} is an apocalyptic number.

402421301441240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402421301441240 is an abundant number, since it is smaller than the sum of its proper divisors (503026626801640).

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

402421301441240 is a wasteful number, since it uses less digits than its factorization.

402421301441240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060532536042 (or 10060532536038 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 402421301441240 its reverse (42144103124204), we get a palindrome (444565404565444).

The spelling of 402421301441240 in words is "four hundred two trillion, four hundred twenty-one billion, three hundred one million, four hundred forty-one thousand, two hundred forty".