125143402 has 4 divisors (see below), whose sum is σ = 187715106. Its totient is φ = 62571700.

The previous prime is 125143399. The next prime is 125143411. The reversal of 125143402 is 204341521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204341521 = 61 ⋅3349861.

It can be written as a sum of positive squares in only one way, i.e., 83010321 + 42133081 = 9111^2 + 6491^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31285849 + ... + 31285852.

Almost surely, 2^125143402 is an apocalyptic number.

125143402 is a deficient number, since it is larger than the sum of its proper divisors (62571704).

125143402 is an equidigital number, since it uses as much as digits as its factorization.

125143402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62571703.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 125143402 is about 11186.7511816434. The cubic root of 125143402 is about 500.1911295963.

Adding to 125143402 its reverse (204341521), we get a palindrome (329484923).

The spelling of 125143402 in words is "one hundred twenty-five million, one hundred forty-three thousand, four hundred two".