1421573741 has 6 divisors (see below), whose sum is σ = 1653667470. Its totient is φ = 1218491736.

The previous prime is 1421573737. The next prime is 1421573743. The reversal of 1421573741 is 1473751241.

It can be written as a sum of positive squares in only one way, i.e., 1410378025 + 11195716 = 37555^2 + 3346^2 .

It is not a de Polignac number, because 1421573741 - 2² = 1421573737 is a prime.

It is a super-2 number, since 2×1421573741² = 4041743802201470162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421573743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14505806 + ... + 14505903.

It is an arithmetic number, because the mean of its divisors is an integer number (275611245).

Almost surely, 2^1421573741 is an apocalyptic number.

It is an amenable number.

1421573741 is a deficient number, since it is larger than the sum of its proper divisors (232093729).

1421573741 is an equidigital number, since it uses as much as digits as its factorization.

1421573741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29011723 (or 29011716 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 1421573741 is about 37703.7629554399. The cubic root of 1421573741 is about 1124.4059391326.

The spelling of 1421573741 in words is "one billion, four hundred twenty-one million, five hundred seventy-three thousand, seven hundred forty-one".