1244210042 has 8 divisors (see below), whose sum is σ = 1976098356. Its totient is φ = 585510592.

The previous prime is 1244210021. The next prime is 1244210053. The reversal of 1244210042 is 2400124421.

It can be written as a sum of positive squares in 2 ways, for example, as 1027266601 + 216943441 = 32051^2 + 14729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1244210042² = 3096117257227283528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244209996 and 1244210023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18297173 + ... + 18297240.

Almost surely, 2^1244210042 is an apocalyptic number.

1244210042 is a deficient number, since it is larger than the sum of its proper divisors (731888314).

1244210042 is a wasteful number, since it uses less digits than its factorization.

1244210042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36594432.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1244210042 is about 35273.3616487003. The cubic root of 1244210042 is about 1075.5515588914.

Adding to 1244210042 its reverse (2400124421), we get a palindrome (3644334463).

The spelling of 1244210042 in words is "one billion, two hundred forty-four million, two hundred ten thousand, forty-two".