420234421342 has 4 divisors (see below), whose sum is σ = 630351632016. Its totient is φ = 210117210670.

The previous prime is 420234421333. The next prime is 420234421463. The reversal of 420234421342 is 243124432024.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105058605334 + ... + 105058605337.

It is an arithmetic number, because the mean of its divisors is an integer number (157587908004).

Almost surely, 2^420234421342 is an apocalyptic number.

420234421342 is a deficient number, since it is larger than the sum of its proper divisors (210117210674).

420234421342 is a wasteful number, since it uses less digits than its factorization.

420234421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210117210673.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 420234421342 its reverse (243124432024), we get a palindrome (663358853366).

The spelling of 420234421342 in words is "four hundred twenty billion, two hundred thirty-four million, four hundred twenty-one thousand, three hundred forty-two".