1421015157 has 24 divisors (see below), whose sum is σ = 2149711200. Its totient is φ = 937947600.

The previous prime is 1421015147. The next prime is 1421015161. The reversal of 1421015157 is 7515101241.

1421015157 is a `hidden beast` number, since 1 + 42 + 101 + 515 + 7 = 666.

It is not a de Polignac number, because 1421015157 - 2⁸ = 1421014901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1421015157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421015147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4407 + ... + 53492.

It is an arithmetic number, because the mean of its divisors is an integer number (89571300).

Almost surely, 2^1421015157 is an apocalyptic number.

It is an amenable number.

1421015157 is a deficient number, since it is larger than the sum of its proper divisors (728696043).

1421015157 is an equidigital number, since it uses as much as digits as its factorization.

1421015157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58015 (or 58003 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 1421015157 is about 37696.3546911369. The cubic root of 1421015157 is about 1124.2586475709.

Adding to 1421015157 its reverse (7515101241), we get a palindrome (8936116398).

The spelling of 1421015157 in words is "one billion, four hundred twenty-one million, fifteen thousand, one hundred fifty-seven".