1042749626 has 4 divisors (see below), whose sum is σ = 1564124442. Its totient is φ = 521374812.

The previous prime is 1042749611. The next prime is 1042749641. The reversal of 1042749626 is 6269472401.

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

It is an interprime number because it is at equal distance from previous prime (1042749611) and next prime (1042749641).

It can be written as a sum of positive squares in only one way, i.e., 909324025 + 133425601 = 30155^2 + 11551^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260687405 + ... + 260687408.

Almost surely, 2^1042749626 is an apocalyptic number.

1042749626 is a deficient number, since it is larger than the sum of its proper divisors (521374816).

1042749626 is an equidigital number, since it uses as much as digits as its factorization.

1042749626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521374815.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1042749626 is about 32291.6339939620. The cubic root of 1042749626 is about 1014.0515057213.

The spelling of 1042749626 in words is "one billion, forty-two million, seven hundred forty-nine thousand, six hundred twenty-six".