1340262554 has 4 divisors (see below), whose sum is σ = 2010393834. Its totient is φ = 670131276.

The previous prime is 1340262551. The next prime is 1340262559. The reversal of 1340262554 is 4552620431.

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., 1196814025 + 143448529 = 34595^2 + 11977^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1340262554.

It is not an unprimeable number, because it can be changed into a prime (1340262551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335065637 + ... + 335065640.

Almost surely, 2^1340262554 is an apocalyptic number.

1340262554 is a deficient number, since it is larger than the sum of its proper divisors (670131280).

1340262554 is an equidigital number, since it uses as much as digits as its factorization.

1340262554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670131279.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1340262554 is about 36609.5964741487. The cubic root of 1340262554 is about 1102.5457714486.

Adding to 1340262554 its reverse (4552620431), we get a palindrome (5892882985).

The spelling of 1340262554 in words is "one billion, three hundred forty million, two hundred sixty-two thousand, five hundred fifty-four".