403123112120402 has 4 divisors (see below), whose sum is σ = 604684668180606. Its totient is φ = 201561556060200.

The previous prime is 403123112120359. The next prime is 403123112120419. The reversal of 403123112120402 is 204021211321304.

It is a happy number.

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., 292900599406921 + 110222512713481 = 17114339^2 + 10498691^2 .

It is an unprimeable number.

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, 100780778030099 + ... + 100780778030102.

Almost surely, 2^{403123112120402} is an apocalyptic number.

403123112120402 is a deficient number, since it is larger than the sum of its proper divisors (201561556060204).

403123112120402 is a wasteful number, since it uses less digits than its factorization.

403123112120402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201561556060203.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 403123112120402 its reverse (204021211321304), we get a palindrome (607144323441706).

The spelling of 403123112120402 in words is "four hundred three trillion, one hundred twenty-three billion, one hundred twelve million, one hundred twenty thousand, four hundred two".