420111320252542 has 16 divisors (see below), whose sum is σ = 647454454783920. Its totient is φ = 204366576192768.

The previous prime is 420111320252509. The next prime is 420111320252551. The reversal of 420111320252542 is 245252023111024.

It is a junction number, because it is equal to n+sod(n) for n = 420111320252498 and 420111320252507.

It is a congruent number.

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, 18351872193 + ... + 18351895084.

It is an arithmetic number, because the mean of its divisors is an integer number (40465903423995).

Almost surely, 2^{420111320252542} is an apocalyptic number.

420111320252542 is a deficient number, since it is larger than the sum of its proper divisors (227343134531378).

420111320252542 is a wasteful number, since it uses less digits than its factorization.

420111320252542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36703767435.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 420111320252542 its reverse (245252023111024), we get a palindrome (665363343363566).

The spelling of 420111320252542 in words is "four hundred twenty trillion, one hundred eleven billion, three hundred twenty million, two hundred fifty-two thousand, five hundred forty-two".