1401420531 has 24 divisors (see below), whose sum is σ = 2183430144. Its totient is φ = 797202000.

The previous prime is 1401420523. The next prime is 1401420533. The reversal of 1401420531 is 1350241041.

It is not a de Polignac number, because 1401420531 - 2³ = 1401420523 is a prime.

It is a super-2 number, since 2×1401420531² = 3927959009416643922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1401420498 and 1401420507.

It is not an unprimeable number, because it can be changed into a prime (1401420533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11406 + ... + 54156.

It is an arithmetic number, because the mean of its divisors is an integer number (90976256).

Almost surely, 2^1401420531 is an apocalyptic number.

1401420531 is a deficient number, since it is larger than the sum of its proper divisors (782009613).

1401420531 is a wasteful number, since it uses less digits than its factorization.

1401420531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42991 (or 42984 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1401420531 is about 37435.5516988864. The cubic root of 1401420531 is about 1119.0671790208.

Adding to 1401420531 its reverse (1350241041), we get a palindrome (2751661572).

The spelling of 1401420531 in words is "one billion, four hundred one million, four hundred twenty thousand, five hundred thirty-one".