1011990742 has 8 divisors (see below), whose sum is σ = 1734841296. Its totient is φ = 433710312.

The previous prime is 1011990719. The next prime is 1011990779. The reversal of 1011990742 is 2470991101.

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

It is a junction number, because it is equal to n+sod(n) for n = 1011990698 and 1011990707.

It is a congruent number.

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, 36142513 + ... + 36142540.

It is an arithmetic number, because the mean of its divisors is an integer number (216855162).

Almost surely, 2^1011990742 is an apocalyptic number.

1011990742 is a deficient number, since it is larger than the sum of its proper divisors (722850554).

1011990742 is an equidigital number, since it uses as much as digits as its factorization.

1011990742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72285062.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1011990742 is about 31811.8019294727. The cubic root of 1011990742 is about 1003.9810442552.

The spelling of 1011990742 in words is "one billion, eleven million, nine hundred ninety thousand, seven hundred forty-two".