4123421402 has 4 divisors (see below), whose sum is σ = 6185132106. Its totient is φ = 2061710700.

The previous prime is 4123421387. The next prime is 4123421411. The reversal of 4123421402 is 2041243214.

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., 3031713721 + 1091707681 = 55061^2 + 33041^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030855349 + ... + 1030855352.

Almost surely, 2^4123421402 is an apocalyptic number.

4123421402 is a deficient number, since it is larger than the sum of its proper divisors (2061710704).

4123421402 is a wasteful number, since it uses less digits than its factorization.

4123421402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061710703.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4123421402 is about 64213.8723485821. The cubic root of 4123421402 is about 1603.5625567829.

Adding to 4123421402 its reverse (2041243214), we get a palindrome (6164664616).

The spelling of 4123421402 in words is "four billion, one hundred twenty-three million, four hundred twenty-one thousand, four hundred two".