123671402 has 4 divisors (see below), whose sum is σ = 185507106. Its totient is φ = 61835700.

The previous prime is 123671393. The next prime is 123671423. The reversal of 123671402 is 204176321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204176321 = 2467 ⋅82763.

It can be written as a sum of positive squares in only one way, i.e., 77281681 + 46389721 = 8791^2 + 6811^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30917849 + ... + 30917852.

Almost surely, 2^123671402 is an apocalyptic number.

123671402 is a deficient number, since it is larger than the sum of its proper divisors (61835704).

123671402 is an equidigital number, since it uses as much as digits as its factorization.

123671402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61835703.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 123671402 is about 11120.7644521409. The cubic root of 123671402 is about 498.2222225059. Note that the first 6 decimals are identical.

The spelling of 123671402 in words is "one hundred twenty-three million, six hundred seventy-one thousand, four hundred two".