420252544040 has 32 divisors (see below), whose sum is σ = 1080649399680. Its totient is φ = 144086586432.

The previous prime is 420252544037. The next prime is 420252544051. The reversal of 420252544040 is 40445252024.

It is a super-2 number, since 2×420252544040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420252543988 and 420252544006.

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, 750450692 + ... + 750451251.

It is an arithmetic number, because the mean of its divisors is an integer number (33770293740).

Almost surely, 2^420252544040 is an apocalyptic number.

420252544040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420252544040 is an abundant number, since it is smaller than the sum of its proper divisors (660396855640).

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

420252544040 is a wasteful number, since it uses less digits than its factorization.

420252544040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500901961 (or 1500901957 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

Adding to 420252544040 its reverse (40445252024), we get a palindrome (460697796064).

The spelling of 420252544040 in words is "four hundred twenty billion, two hundred fifty-two million, five hundred forty-four thousand, forty".