1421502431 has 8 divisors (see below), whose sum is σ = 1476685728. Its totient is φ = 1367296000.

The previous prime is 1421502409. The next prime is 1421502443. The reversal of 1421502431 is 1342051241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421502431 - 2¹⁴ = 1421486047 is a prime.

It is a super-2 number, since 2×1421502431² = 4041338322677819522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421502397 and 1421502406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421502031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241250 + ... + 247071.

It is an arithmetic number, because the mean of its divisors is an integer number (184585716).

Almost surely, 2^1421502431 is an apocalyptic number.

1421502431 is a deficient number, since it is larger than the sum of its proper divisors (55183297).

1421502431 is an equidigital number, since it uses as much as digits as its factorization.

1421502431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488433.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1421502431 is about 37702.8172820016. The cubic root of 1421502431 is about 1124.3871377329.

Adding to 1421502431 its reverse (1342051241), we get a palindrome (2763553672).

The spelling of 1421502431 in words is "one billion, four hundred twenty-one million, five hundred two thousand, four hundred thirty-one".