126420242 has 16 divisors (see below), whose sum is σ = 205594200. Its totient is φ = 57954432.

The previous prime is 126420233. The next prime is 126420253. The reversal of 126420242 is 242024621.

It can be written as a sum of positive squares in 4 ways, for example, as 73290721 + 53129521 = 8561^2 + 7289^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12443 + ... + 20190.

Almost surely, 2^126420242 is an apocalyptic number.

126420242 is a deficient number, since it is larger than the sum of its proper divisors (79173958).

126420242 is a wasteful number, since it uses less digits than its factorization.

126420242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32797.

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

The square root of 126420242 is about 11243.6756445568. The cubic root of 126420242 is about 501.8865290640.

Adding to 126420242 its reverse (242024621), we get a palindrome (368444863).

The spelling of 126420242 in words is "one hundred twenty-six million, four hundred twenty thousand, two hundred forty-two".