1242090946 has 8 divisors (see below), whose sum is σ = 1864231740. Its totient is φ = 620680368.

The previous prime is 1242090943. The next prime is 1242090947. The reversal of 1242090946 is 6490902421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1027907721 + 214183225 = 32061^2 + 14635^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1242090943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178281 + ... + 185116.

Almost surely, 2^1242090946 is an apocalyptic number.

1242090946 is a deficient number, since it is larger than the sum of its proper divisors (622140794).

1242090946 is a wasteful number, since it uses less digits than its factorization.

1242090946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365108.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1242090946 is about 35243.3106560664. The cubic root of 1242090946 is about 1074.9405976911.

The spelling of 1242090946 in words is "one billion, two hundred forty-two million, ninety thousand, nine hundred forty-six".