1421351245 has 8 divisors (see below), whose sum is σ = 1728986616. Its totient is φ = 1121504256.

The previous prime is 1421351237. The next prime is 1421351251. The reversal of 1421351245 is 5421531241.

1421351245 = 26658² + 26659².

It can be written as a sum of positive squares in 4 ways, for example, as 605848996 + 815502249 = 24614^2 + 28557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421351245 - 2³ = 1421351237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946692 + ... + 1947421.

It is an arithmetic number, because the mean of its divisors is an integer number (216123327).

Almost surely, 2^1421351245 is an apocalyptic number.

1421351245 is the 26659-th centered square number.

It is an amenable number.

1421351245 is a deficient number, since it is larger than the sum of its proper divisors (307635371).

1421351245 is an equidigital number, since it uses as much as digits as its factorization.

1421351245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894191.

The product of its digits is 4800, while the sum is 28.

The square root of 1421351245 is about 37700.8122591543. The cubic root of 1421351245 is about 1124.3472743656.

Adding to 1421351245 its reverse (5421531241), we get a palindrome (6842882486).

It can be divided in two parts, 142135 and 1245, that added together give a triangular number (143380 = T₅₃₅).

The spelling of 1421351245 in words is "one billion, four hundred twenty-one million, three hundred fifty-one thousand, two hundred forty-five".