143696402 has 4 divisors (see below), whose sum is σ = 215544606. Its totient is φ = 71848200.

The previous prime is 143696401. The next prime is 143696407. The reversal of 143696402 is 204696341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204696341 = 347 ⋅589903.

It can be written as a sum of positive squares in only one way, i.e., 73119601 + 70576801 = 8551^2 + 8401^2 .

It is not an unprimeable number, because it can be changed into a prime (143696401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35924099 + ... + 35924102.

Almost surely, 2^143696402 is an apocalyptic number.

143696402 is a deficient number, since it is larger than the sum of its proper divisors (71848204).

143696402 is an equidigital number, since it uses as much as digits as its factorization.

143696402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71848203.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 143696402 is about 11987.3434087791. The cubic root of 143696402 is about 523.7796623305.

The spelling of 143696402 in words is "one hundred forty-three million, six hundred ninety-six thousand, four hundred two".