427156223402 has 4 divisors (see below), whose sum is σ = 640734335106. Its totient is φ = 213578111700.

The previous prime is 427156223401. The next prime is 427156223411. The reversal of 427156223402 is 204322651724.

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

It can be written as a sum of positive squares in only one way, i.e., 420423856801 + 6732366601 = 648401^2 + 82051^2 .

It is not an unprimeable number, because it can be changed into a prime (427156223401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106789055849 + ... + 106789055852.

Almost surely, 2^427156223402 is an apocalyptic number.

427156223402 is a deficient number, since it is larger than the sum of its proper divisors (213578111704).

427156223402 is a wasteful number, since it uses less digits than its factorization.

427156223402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213578111703.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 427156223402 in words is "four hundred twenty-seven billion, one hundred fifty-six million, two hundred twenty-three thousand, four hundred two".