1421461157 has 4 divisors (see below), whose sum is σ = 1483263840. Its totient is φ = 1359658476.

The previous prime is 1421461147. The next prime is 1421461159. The reversal of 1421461157 is 7511641241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1421461157 - 2²² = 1417266853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421461159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30901307 + ... + 30901352.

It is an arithmetic number, because the mean of its divisors is an integer number (370815960).

Almost surely, 2^1421461157 is an apocalyptic number.

It is an amenable number.

1421461157 is a deficient number, since it is larger than the sum of its proper divisors (61802683).

1421461157 is an equidigital number, since it uses as much as digits as its factorization.

1421461157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61802682.

The product of its digits is 6720, while the sum is 32.

The square root of 1421461157 is about 37702.2699184015. The cubic root of 1421461157 is about 1124.3762552556.

The spelling of 1421461157 in words is "one billion, four hundred twenty-one million, four hundred sixty-one thousand, one hundred fifty-seven".