1361720054 has 4 divisors (see below), whose sum is σ = 2042580084. Its totient is φ = 680860026.

The previous prime is 1361720051. The next prime is 1361720057. The reversal of 1361720054 is 4500271631.

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 (1361720051) and next prime (1361720057).

It is a junction number, because it is equal to n+sod(n) for n = 1361719999 and 1361720026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361720051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340430012 + ... + 340430015.

It is an arithmetic number, because the mean of its divisors is an integer number (510645021).

Almost surely, 2^1361720054 is an apocalyptic number.

1361720054 is a deficient number, since it is larger than the sum of its proper divisors (680860030).

1361720054 is an equidigital number, since it uses as much as digits as its factorization.

1361720054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680860029.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1361720054 is about 36901.4912164807. The cubic root of 1361720054 is about 1108.3985384644.

Adding to 1361720054 its reverse (4500271631), we get a palindrome (5861991685).

The spelling of 1361720054 in words is "one billion, three hundred sixty-one million, seven hundred twenty thousand, fifty-four".