9011021242 has 4 divisors (see below), whose sum is σ = 13516531866. Its totient is φ = 4505510620.

The previous prime is 9011021191. The next prime is 9011021269. The reversal of 9011021242 is 2421201109.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8966385481 + 44635761 = 94691^2 + 6681^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252755309 + ... + 2252755312.

Almost surely, 2^9011021242 is an apocalyptic number.

9011021242 is a deficient number, since it is larger than the sum of its proper divisors (4505510624).

9011021242 is a wasteful number, since it uses less digits than its factorization.

9011021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505510623.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 9011021242 is about 94926.3990784439. The cubic root of 9011021242 is about 2080.9325547430.

The spelling of 9011021242 in words is "nine billion, eleven million, twenty-one thousand, two hundred forty-two".