126161902 has 4 divisors (see below), whose sum is σ = 189242856. Its totient is φ = 63080950.

The previous prime is 126161891. The next prime is 126161933. The reversal of 126161902 is 209161621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209161621 = 283 ⋅739087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31540474 + ... + 31540477.

It is an arithmetic number, because the mean of its divisors is an integer number (47310714).

Almost surely, 2^126161902 is an apocalyptic number.

126161902 is a deficient number, since it is larger than the sum of its proper divisors (63080954).

126161902 is an equidigital number, since it uses as much as digits as its factorization.

126161902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63080953.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 126161902 is about 11232.1815334333. The cubic root of 126161902 is about 501.5444272438.

The spelling of 126161902 in words is "one hundred twenty-six million, one hundred sixty-one thousand, nine hundred two".