1390826342 has 4 divisors (see below), whose sum is σ = 2086239516. Its totient is φ = 695413170.

The previous prime is 1390826317. The next prime is 1390826347. The reversal of 1390826342 is 2436280931.

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

It is a super-2 number, since 2×1390826342² = 3868795827202201928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1390826296 and 1390826305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390826347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347706584 + ... + 347706587.

It is an arithmetic number, because the mean of its divisors is an integer number (521559879).

Almost surely, 2^1390826342 is an apocalyptic number.

1390826342 is a deficient number, since it is larger than the sum of its proper divisors (695413174).

1390826342 is an equidigital number, since it uses as much as digits as its factorization.

1390826342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695413173.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1390826342 is about 37293.7842274018. The cubic root of 1390826342 is about 1116.2401404026.

The spelling of 1390826342 in words is "one billion, three hundred ninety million, eight hundred twenty-six thousand, three hundred forty-two".