1000551042 has 56 divisors (see below), whose sum is σ = 2270497644. Its totient is φ = 330511104.

The previous prime is 1000550977. The next prime is 1000551049. The reversal of 1000551042 is 2401550001.

It can be written as a sum of positive squares in 2 ways, for example, as 992817081 + 7733961 = 31509^2 + 2781^2 .

It is a super-2 number, since 2×1000551042² = 2002204775294571528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1000551049) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 161718 + ... + 167790.

Almost surely, 2^1000551042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000551042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1135248822).

1000551042 is an abundant number, since it is smaller than the sum of its proper divisors (1269946602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000551042 is an equidigital number, since it uses as much as digits as its factorization.

1000551042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6206 (or 6191 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1000551042 is about 31631.4881407752. The cubic root of 1000551042 is about 1000.1836469384.

The spelling of 1000551042 in words is "one billion, five hundred fifty-one thousand, forty-two".