1087020442 has 4 divisors (see below), whose sum is σ = 1630530666. Its totient is φ = 543510220.

The previous prime is 1087020439. The next prime is 1087020463. The reversal of 1087020442 is 2440207801.

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., 752459761 + 334560681 = 27431^2 + 18291^2 .

It is a super-2 number, since 2×1087020442² = 2363226882651750728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1087020442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271755109 + ... + 271755112.

Almost surely, 2^1087020442 is an apocalyptic number.

1087020442 is a deficient number, since it is larger than the sum of its proper divisors (543510224).

1087020442 is an equidigital number, since it uses as much as digits as its factorization.

1087020442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543510223.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1087020442 is about 32969.9930542910. The cubic root of 1087020442 is about 1028.2038769835.

The spelling of 1087020442 in words is "one billion, eighty-seven million, twenty thousand, four hundred forty-two".