1422431157 has 32 divisors (see below), whose sum is σ = 2297320704. Its totient is φ = 764236800.

The previous prime is 1422431141. The next prime is 1422431167. The reversal of 1422431157 is 7511342241.

It is not a de Polignac number, because 1422431157 - 2⁴ = 1422431141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422431107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663307 + ... + 665447.

It is an arithmetic number, because the mean of its divisors is an integer number (71791272).

Almost surely, 2^1422431157 is an apocalyptic number.

1422431157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1422431157 is a deficient number, since it is larger than the sum of its proper divisors (874889547).

1422431157 is a wasteful number, since it uses less digits than its factorization.

1422431157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029.

The product of its digits is 6720, while the sum is 30.

The square root of 1422431157 is about 37715.1316715188. The cubic root of 1422431157 is about 1124.6319538777.

Adding to 1422431157 its reverse (7511342241), we get a palindrome (8933773398).

The spelling of 1422431157 in words is "one billion, four hundred twenty-two million, four hundred thirty-one thousand, one hundred fifty-seven".