1401020424 has 48 divisors (see below), whose sum is σ = 3796638300. Its totient is φ = 466735104.

The previous prime is 1401020399. The next prime is 1401020441. The reversal of 1401020424 is 4240201041.

1401020424 is a `hidden beast` number, since 140 + 102 + 0 + 424 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 993384324 + 407636100 = 31518^2 + 20190^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1401020397 and 1401020406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147532 + ... + 156740.

Almost surely, 2^1401020424 is an apocalyptic number.

It is an amenable number.

1401020424 is an abundant number, since it is smaller than the sum of its proper divisors (2395617876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401020424 is a wasteful number, since it uses less digits than its factorization.

1401020424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11334 (or 11327 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1401020424 is about 37430.2073731899. The cubic root of 1401020424 is about 1118.9606706080.

Adding to 1401020424 its reverse (4240201041), we get a palindrome (5641221465).

The spelling of 1401020424 in words is "one billion, four hundred one million, twenty thousand, four hundred twenty-four".