1421742245 has 32 divisors (see below), whose sum is σ = 2172358656. Its totient is φ = 867412800.

The previous prime is 1421742221. The next prime is 1421742251. The reversal of 1421742245 is 5422471241.

It is not a de Polignac number, because 1421742245 - 2¹⁰ = 1421741221 is a prime.

It is a super-2 number, since 2×1421742245² = 4042702022435280050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21191 + ... + 57380.

It is an arithmetic number, because the mean of its divisors is an integer number (67886208).

Almost surely, 2^1421742245 is an apocalyptic number.

It is an amenable number.

1421742245 is a deficient number, since it is larger than the sum of its proper divisors (750616411).

1421742245 is a wasteful number, since it uses less digits than its factorization.

1421742245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78641.

The product of its digits is 17920, while the sum is 32.

The square root of 1421742245 is about 37705.9974672465. The cubic root of 1421742245 is about 1124.4503639386.

The spelling of 1421742245 in words is "one billion, four hundred twenty-one million, seven hundred forty-two thousand, two hundred forty-five".